å°±æ¯CADãæå¤å ä¸äºè¾ å©æ件ã
æåºç¡çï¼å°±æ¯æ好ç¨çã
ä¸å¾æ¯æç°å¨æ£å¨å·¥ä½çä¸ä¸ªå¾ï¼è¿æ²¡å¼å®ï¼ç¾åº¦ä¸åå¤é®é¢æ¢æ¢èåã
æç¨çè¿æ¯2008ï¼ç¨çæ件就ä¸ä¸ªé¢è²ãä¸ä¸ªæ 注åªåã
常ç¨çå¾æ¡åæåéæ¶è°ç¨ï¼ä¸å¸¸ç¨çå¾æ¡å°±èªå·±ç»ã