目录
MATLAB setup
matlab安装
matlab关联m文件代码
星座图的matlab仿真
MATLAB setup
matlab安装
很久没有用过matlab了~首先给出matlab2019的安装资料（matlab2019a安装）参考这个资料，应该比较轻松的就可以安装并破解matlab19了哈~
matlab关联m文件代码
（参考资料https://blog.csdn.net/myathappy/article/details/90404890）
复制代码
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354function associateFiles(action, userExtList, fileStr) % associateFiles(action, extList, fileStr) % % Makes a registry files that can be used to set correct file associantions on % a windows platform. The following MATLAB file extensions are supported: % .m, .mat, .fig, .mexw32, .mexw64, .p, .mdl, .mdlp, .slx, .mldatx, .req, % .sldd, .slddc, .slxp, .sltx, .mn, .mu, .muphlp, .xvc, .xvz, .ssc, .mlapp, % .mlappinstall, .mltbx, .mlpkginstall, .mlprj % % INPUT: % action - optional string. % * 'add' (default) adds/rewrites the MATLAB file association registry % keys for this version. % * 'delete' deletes the MATLAB file association registry entries for % ALL versions of MATLAB (including "old style" ones) % * 'deleteadd' is the same as 'delete' followed by 'add' % extList - optional string or cell array of strings containing the file % extensions that should be associated with this version. Default is % all MATLAB file extension (see above). % fileStr - optional string with the name of the registry file to be written % (possibly including path). Default is the file % 'MatlabFileAssocFix.reg' in the current directory. % % USAGE: % 1) Run with desired options (see above). A registry file should have been % created. % 2) Exit all running instances of MATLAB. % 3) Make a backup copy of the windows registry if you need to restore the % changes, see https://support.microsoft.com/en-us/kb/322756 % 4) Double click on the created file (possibly need to enter a password) and % confirm. % 5) Restart Windows (or explorer.exe). % 6) The MATLAB files should now be associated with the MATLAB version that the % registry file was created in and e.g. m-files should be opened in an % already running instance of MATLAB. % % EXAMPLES: % * associateFiles('deleteadd') - Makes a registry files that deletes all % previous MATLAB file association registry keys and write new ones that % associates all MATLAB files with the MATLAB version that the registry file % was created in. % * associateFiles('', {'.m', '.mat', '.fig'}, 'myFile') - Makes a registry file % "myFile.reg" that associates m-, mat- and fig-files with the MATLAB version % that the registry file was created in. % % VERSION 1.0 % Defualt input if (nargin < 1 || isempty(action)) action = 'add'; end if (nargin < 2) userExtList = {}; end if (nargin < 3) fileStr = ''; end if (~iscell(userExtList)) if (isempty(userExtList)) userExtList = {}; else userExtList = {userExtList}; end end % Sanity check if (~ischar(action) || (~strcmpi(action, 'add') && ... ~strcmpi(action, 'delete') && ~strcmpi(action, 'deleteadd'))) error('The action to perform must be ''add'', ''delete'' or ''deleteadd''!') end if (~isempty(userExtList) && ~min(cellfun(@ischar, userExtList))) error('The file extension list must be a string or a cell array of strings!') end if (~ischar(fileStr)) error('The file to write to must be a string!') end % Get the currently running MATLAB version verStr = regexp(version, '(d*?.d*?.d*?).', 'tokens'); verStr = verStr{1}{1}; verNum = str2double(regexprep(verStr, '(d*?.d*)[x0000-xffff]*', '$1')); verHex = sprintf('x', str2double(regexprep(verStr, ... '(d*?).[x0000-xffff]*', '$1')), str2double(regexprep(verStr, ... 'd*?.(d*?).[x0000-xffff]*', '$1'))); % Get 32/64-bit arch = computer; switch arch case 'PCWIN' binFolder = 'win32'; case 'PCWIN64' binFolder = 'win64'; end binPath = fullfile(matlabroot, 'bin', binFolder); % Known MATLAB files with possible DDE actions fileExtCell = {... 'fig' , 'MATLAB Figure' , '-62' , ... {'Open', 'uiopen(''%1'',1)'} , [] ; ... 'm' , 'MATLAB Code' , '-58' , ... {'Open', 'uiopen(''%1'',1)'} , {'Run', 'run(''%1'')'} ; ... 'mat' , 'MATLAB Data' , '-59' , ... {'Load', 'load(''%1'')' } , {'Open', 'uiimport(''%1'')'}; ... 'mdl' , 'Simulink Model' , '-61' , ... {'Load', 'uiopen(''%1'',1)'} , [] ; ... 'mdlp' , 'Simulink Protected Model' , '-72' , ... [] , [] ; ... 'mexw32', 'MATLAB MEX' , '-63' , ... [] , [] ; ... 'mexw64', 'MATLAB MEX' , '-63' , ... [] , [] ; ... 'mn' , 'MuPAD Notebook' , '-66' , ... {'Open', 'mupad(''%1'')'} , [] ; ... 'mu' , 'MuPAD Code' , '-67' , ... {'Open', 'uiopen(''%1'',1)'} , [] ; ... 'muphlp', 'MuPAD Help' , '-68' , ... {'Open', 'doc(symengine, ''%1'')'} , [] ; ... 'p' , 'MATLAB P-code' , '-60' , ... [] , [] ; ... 'slx' , 'Simulink Model (SLX format)', '-73' , ... {'Open', 'uiopen(''%1'',1)'} , [] ; ... 'ssc' , 'Simscape Model' , '-65' , ... {'Open', 'uiopen(''%1'',1)'} , [] ; ... 'xvc' , 'MuPAD Graphics' , '-69' , ... {'Open', 'mupad(''%1'')'} , [] ; ... 'xvz' , 'MuPAD Graphics' , '-70' , ... {'Open', 'mupad(''%1'')'} , [] ; ... 'mlapp' , 'MATLAB Application' , [] , [], [] ; ... 'mltbx' , 'MATLAB Toolbox' , [] , [], [] ; ... 'mldatx' , 'Simulink Scenario' , [] , [], [] ; ... 'req' , 'Simulink Requirements Link' , [] , [], [] ; ... 'sldd' , 'Simulink Dictionary' , [] , [], [] ; ... 'slddc' , 'Simulink Dictionary' , [] , [], [] ; ... 'mlappinstall', 'MATLAB Application' , [] , [], [] ; ... 'mlpkginstall', 'MATLAB Support Package' , [] , [], [] ; ... 'slxp' , 'Simulink Protected Model Package', [] , [], [] ; ... 'sltx' , 'Simulink Template' , [] , [], [] ; ... 'mlprj' , 'MATLAB Project' , [] , [], []}; % Possibly trim list if (~isempty(userExtList)) fileExtCell = fileExtCell(ismember(fileExtCell(:, 1), ... regexprep(userExtList, '.', '')), :); end % Make registry file if (~isempty(fileStr)) % Possibly add file extension [~, ~, tmp] = fileparts(fileStr); if (isempty(tmp)) fileStr = [fileStr, '.reg']; end fid = fopen(fileStr, 'w'); else fid = fopen('MatlabFileAssocFix.reg', 'w'); end if (fid == -1) error('Failed to create registry file') end % Write intial lines fprintf(fid, '%srnrn', 'Windows Registry Editor Version 5.00'); fprintf(fid, '%srnrn', ';FIXES MATLAB FILE ASSOCIATIONS'); % REMOVE OLD KEYS explorerKey = ['HKEY_CURRENT_USERSoftwareMicrosoftWindows', ... 'CurrentVersionExplorerFileExts']; % Iterate over file extensions for fileExtNo = 1 : size(fileExtCell, 1) rmKeys = {}; fileExt = fileExtCell{fileExtNo, 1}; % File extension keys [status, result] = dos(['reg query HKEY_CLASSES_ROOT /f .', fileExt, ... ' /k /e']); if (~status) keys = regexp(result, '(HKEY_CLASSES_ROOT[x0000-xffff]*?)n', 'tokens'); rmKeys = [rmKeys, keys{:}]; end % Old style keys without version numbers if (~strcmpi(fileExt, 'mexw64')) % Uses single DDE key for mex files if (strcmpi(fileExt, 'mexw32')) fileExtTmp = 'mex'; else fileExtTmp = fileExt; end [status, result] = dos(['reg query HKEY_CLASSES_ROOT /f ', ... fileExtTmp, 'file /k /e']); if (~status) keys = regexp(result, '(HKEY_CLASSES_ROOT[x0000-xffff]*?)n', ... 'tokens'); rmKeys = [rmKeys, keys{:}]; end end % New style keys with version number if (strcmpi(action, 'add')) % Only remove keys related to this version [status, result] = dos(['reg query HKEY_CLASSES_ROOT /f MATLAB.', ... fileExt, '.', verStr ' /k']); else % Remove keys related to ALL version [status, result] = dos(['reg query HKEY_CLASSES_ROOT /f MATLAB.', ... fileExt, '. /k']); end if (~status) keys = regexp(result, '(HKEY_CLASSES_ROOT[x0000-xffff]*?)n', 'tokens'); rmKeys = [rmKeys, keys{:}]; end % Explorer keys [status, result] = dos(['reg query ', explorerKey, ' /f .', fileExt, ... ' /k /e']); if (~status) keys = regexp(result, '(HKEY_CURRENT_USER[x0000-xffff]*?)n', 'tokens'); rmKeys = [rmKeys, keys{:}]; end % Write to file if (~isempty(rmKeys)) fprintf(fid, '%srnrn', [';REMOVES ', upper(fileExt), ... ' FILE ASSOCIATIONS']); for keyNo = 1 : length(rmKeys) key = rmKeys{keyNo}; fprintf(fid, '%srnrn', ['[-', key, ']']); end end end % ADD KEYS if (~strcmpi(action, 'delete')) % Get text Persistent Handler [status, result] = dos(... 'reg query HKEY_CLASSES_ROOT.txtPersistentHandler /ve'); if (~status) PersistentHandler = regexp(result, '{[x0000-xffff]*?}', 'match'); PersistentHandler = PersistentHandler{1}; else PersistentHandler = ''; end % DDE call ddeCall = 'ShellVerbs.Matlab'; if (verNum > 8) % Changed from R2013a ddeCall = [ddeCall, '.', verStr]; end % Default icon defIcon = 'm'; if (~exist(fullfile(binPath, 'm.ico'), 'file')) defIcon = ''; end % Path to MATLAB binary directory with \ binPathStr = regexprep(binPath, '\', '\\'); % Write Shell Open key key = ['[HKEY_CLASSES_ROOTApplicationsMATLAB.exeshellopen', ... 'command]%r', '@=""', binPathStr, '\MATLAB.exe" "%1""%r%r']; fprintf(fid, '%srnrn', ';ADD SHELL OPEN'); lines = regexp(key, '([x0000-xffff]*?)%r', 'tokens'); for lineNo = 1 : length(lines) fprintf(fid, '%srn', lines{lineNo}{1}); end % Iterate over file types for fileExtNo = 1 : size(fileExtCell, 1) fileExt = fileExtCell{fileExtNo, 1}; % File extension keys key = ['[HKEY_CLASSES_ROOT.', fileExt, ']%r@="MATLAB.', fileExt, '.', ... verStr, '"%r']; if (strcmpi(fileExt, 'm') && ~isempty(PersistentHandler)) % Add some values key = [key, '"Content Type"="text/plain"%r', ... '"PerceivedType"="Text"%r']; end key = [key, '%r']; key = [key, '[HKEY_CLASSES_ROOT.', fileExt, ... 'OpenWithProgids]%r"MATLAB.', fileExt, '.', verStr, '"=""%r%r']; if (strcmpi(fileExt, 'm') && ~isempty(PersistentHandler)) key = [key, '[HKEY_CLASSES_ROOT.', fileExt, ... 'PersistentHandler]%r@="', PersistentHandler, '"%r%r']; end key = [key, '[HKEY_CLASSES_ROOT.', fileExt, ... 'VersionsMATLAB.', fileExt, '.' verStr, ']%r"FileVersionMS"=dword:', ... verHex, '%r"FileVersionLS"=dword:00000000%r%r']; % DDE keys ddeData = fileExtCell(ismember(fileExtCell(:, 1), fileExt), :); key = [key, '[HKEY_CLASSES_ROOTMATLAB.', fileExt, '.' verStr, ... ']%r@="', ddeData{2}, '"%r']; if (~isempty(ddeData{3})) key = [key, '"FriendlyTypeName"="@', binPathStr, '\matlab.exe', ... ',', ddeData{3}, '"%r']; end key = [key, '%r']; % Icon icon = fileExt; if (~exist(fullfile(binPath, [icon, '.ico']), 'file')) icon = defIcon; end if (~isempty(icon)) key = [key, '[HKEY_CLASSES_ROOTMATLAB.', fileExt, '.' verStr, ... 'DefaultIcon]%r@="', binPathStr, '\', icon, '.ico,0"%r%r']; end % Shell actions for shellActionNo = 4:5 ddePar = ddeData{shellActionNo}; if (~isempty(ddePar)) key = [key, '[HKEY_CLASSES_ROOTMATLAB.', fileExt, '.' verStr, ... 'Shell', ddePar{1}, ']%r@="', ddePar{1}, '"%r%r']; key = [key, '[HKEY_CLASSES_ROOTMATLAB.', fileExt, '.' verStr, ... 'Shell', ddePar{1}, 'command]%r@=""', binPathStr, ... '\matlab.exe""%r%r']; key = [key, '[HKEY_CLASSES_ROOTMATLAB.', fileExt, '.' verStr, ... 'Shell', ddePar{1}, 'ddeexec]%r@="', ddePar{2}, '"%r%r']; key = [key, '[HKEY_CLASSES_ROOTMATLAB.', fileExt, '.' verStr, ... 'Shell', ddePar{1},'ddeexecapplication]%r@="', ... ddeCall, '"%r%r']; key = [key, '[HKEY_CLASSES_ROOTMATLAB.', fileExt, '.' verStr, ... 'Shell', ddePar{1},'ddeexectopic]%r@="system"%r%r']; end end % Explorer keys key = [key, '[', explorerKey, '.', fileExt, 'OpenWithProgids]%r']; if (strcmpi(fileExt, 'm')) key = [key, '"m_auto_file"=hex(0):%r']; end key = [key, '"MATLAB.', fileExt, '.', verStr, '"=hex(0):%r%r']; if (~isempty(ddeData{4})) % Add key key = [key, '[', explorerKey, '.', fileExt, ... 'OpenWithList]%r"a"="MATLAB.exe"%r"MRUList"="a"%r%r']; else key = [key, '[', explorerKey, '.', fileExt, 'OpenWithList]%r%r']; end % Write to file fprintf(fid, '%srnrn', [';ADD ', upper(fileExt), ... ' FILE ASSOCIATIONS']); lines = regexp(key, '([x0000-xffff]*?)%r', 'tokens'); for lineNo = 1 : length(lines) fprintf(fid, '%srn', lines{lineNo}{1}); end end end % Cloese file fclose(fid);
正常情况下，.m文件的图标应该是这样的：
好，配置完matlab文件，下面进入正文
星座图的matlab仿真
星座图仿真代码如下：
复制代码
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%下面的部分是计算传输信道的脉冲响应h(t)%%%%%% theta = 70; %半功率点半角 c = 3e8; %光速 m = -log10(2)/log10(cosd(theta)); %朗伯发射级数 P_total = 20; %单个LED的功率（单位为W） Adet = 1e-4; %PD的接受面面积 index = 1.5; FOV = 60*pi/180; %接受场视角 G_Gon = (index^2)/sin(FOV); %集光器增益 lx = 5;ly = 5;lz = 3; %房屋尺寸 h = 2.15; %源与接受平面之间的距离 XT = 0; YT = 0; %LED位置 XR = 1.25; YR = 1.25; %我们先假设只有一个接收器 D1 = sqrt((XR - XT(1,1)).^2 + (YR - YT(1,1)).^2+h.^2); %就是接收器到源的距离矢量 cosphi_Al = h./D1; %角度矢量 H_Al = (m + 1)*Adet.*cosphi_Al.^(m+1)./(2*pi.*D1.^2); %计算直流增益/信道的衰减因子 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Rb = 1; %%%%%%%%%%归一化比特速率， fc = Rb*5; %载波频率（更高的频率） Tb = 1/Rb; %比特宽度，每个bit持续的时间长度 fsamp = fc * 10; %采样速率，以10倍载波频率来采样 nsamp = fsamp/Rb; %每个bit的采样数 Tsamp = Tb/nsamp; %采样时刻 N_data_symbol = 10000; %符号数（比特数），一共传输了10000个bits t = Tsamp:Tsamp:Tb*N_data_symbol; %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 16QAM调制 M = 16; %可选调制方式M=4表示QPSK，M=8,16,32,64表示mQAM tx_bits = randi([0,M-1],1,N_data_symbol); %生成随机信号.[0,1]分布的随机变量，10000个bits tx_bits_mod = qammod(tx_bits, M); %产生QAM调制信号 scatterplot(tx_bits_mod);%绘制散点图 title('原始信号星座') %************LED响应****************** wc=6e6; %led截止频率(3M,算上采样率就是6M) b=1;a=[1,wc]; %模拟滤波器系数 [bd,ad]=bilinear(b,a,fsamp); %模拟滤波器双线性变换为数字滤波器 [Hd,wd]=freqz(bd,ad);%%%%%%%%滤波器频率响应函数 bd1=bd/(max(abs(Hd))); %数字滤波器幅度归一化 SNR = 30;%%%30 dB tx_signal = rectpulse(tx_bits_mod,nsamp); %矩形脉冲成形 rr = filter(bd1,ad,tx_signal); %通过滤波器（模拟LED） rr1=awgn(rr,SNR,'measured'); y1=downsample(rr1,nsamp,nsamp-1); %降采样 scatterplot(y1); title('接受信号的星座图');
改进后代码如下
复制代码
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%下面的部分是计算传输信道的脉冲响应h(t)以及信噪比SNR%%%%%% Incidence = 60*pi/180; %入射范围 theta = 70; %半功率点半角 RX_FOV = 90; %接受场视角 R = 1; Adet = 1e-4; %PD的接受面面积 Rb = 1; %%%%%%%%%%归一化比特速率， lamp = 5e-12; %放大器电流 q = 1.6e-19; %电子数 Bn = 50e6; %噪声带宽 l2 = 0.562; %噪声带宽因子 PLED = 0.5; %LED的功率，单位：W(一般的单个LED功率都是0.几W） index = 1.5; %PD用透镜的折射率 HLED = 1; D = 3; %点对点传输，LED与接收器的距离 cosphi_AL = 1; %由于LED与接收器在同一直线上，所以角度矢量为1 m = -log10(2)/log10(cosd(theta)); %朗伯发射级数 H_Al = (m+1) * Adet.* cosphi_AL.^(m+1)./(2*pi*D.^2); %直流增益 R0 = ((m+1)/(2*pi)).*cosphi_AL^m; %朗伯辐射强度 Ptx = PLED.*R0; %LED发射功率 Prx = H_Al.*Ptx; %接受功率; %下面计算系统中的噪声： Bs = Rb * l2; Pn = lamp/Rb; Ptotal = Prx + Pn; %总功率 new_shot = 2*q*Ptotal*Bs; new_amp = lamp^2*Bn; new_total = new_shot + new_amp; SNRl = (R.*Prx).^2/ new_total; SNRdb = 10*log10(SNRl); SNRdb %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% fc = Rb * 5; %载波频率 Tb = 1/Rb; %比特宽度，每个bit持续的时间长度 fsamp = fc * 10; %采样速率，以10倍载波频率来采样 nsamp = fsamp/Rb; %每个bit的采样数 Tsamp = Tb/nsamp; %采样时刻 N_data_symbol = 10000; %符号数（比特数），一共传输了10000个bits t = Tsamp:Tsamp:Tb*N_data_symbol; %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 16QAM调制 M = 16; %可选调制方式M=4表示QPSK，M=8,16,32,64表示mQAM tx_bits = randi([0,M-1],1,N_data_symbol); %生成随机信号，10000个bits tx_bits_mod = qammod(tx_bits, M); %产生QAM调制信号 scatterplot(tx_bits_mod); %绘制散点图 title('原始信号星座') %************LED响应****************** wc=6e6; %led截止频率(3M,算上采样率就是6M) b=1;a=[1,wc]; %模拟滤波器系数 [bd,ad]=bilinear(b,a,fsamp); %模拟滤波器双线性变换为数字滤波器 [Hd,wd]=freqz(bd,ad); bd1=bd/(max(abs(Hd))); %数字滤波器幅度归一化 tx_signal = rectpulse(tx_bits_mod,nsamp); %矩形脉冲成形 rr = filter(bd1,ad,tx_signal); %通过滤波器（模拟LED） rr1=awgn(rr,SNRdb,'measured'); scatterplot(rr1); title('解调之前,经过信道传输接收到的星座图'); demod_rr1 = qamdemod(rr1, M); scatterplot(demod_rr1); title('解调之后的星座图'); y1=downsample(demod_rr1,nsamp,nsamp-1); %降采样 scatterplot(y1); title('接受信号的星座图');
结果图
最后
以上就是激情飞鸟最近收集整理的关于学习笔记之——基于matlab的星座图MATLAB setup星座图的matlab仿真的全部内容，更多相关学习笔记之——基于matlab的星座图MATLAB内容请搜索靠谱客的其他文章。
本图文内容来源于网友提供，作为学习参考使用，或来自网络收集整理，版权属于原作者所有。
发表评论 取消回复