姿æ???§å?¶ç³»ç»???»´????¤©?¨å?¨è½¨é£?è¡?稳å????³é??³»ç»?ï¼??¶ä¸­è½?½´ç±»é?¶ä»¶??????精度?´æ?¥å½±??该系ç»?ä¸??§è??ºæ?????§å?¶ç²¾åºþ@??è¿?è¡?寿å?½ã??

天津??¤©?ºç?µè?å¤???究æ??ç²¾å??¶é??ä¸???¹çº§??å¸????¨å?½ä?ä¸??³å?¨å?ç«??·å???????å®?åº??¨ç²¾å¯???磨æ?????使å??å·¥é?¨ä?å½¢ç?¶å??å°ºå???·®ä¸¥æ?¼æ?§å?¶å??.5å¾?±³ä»¥å??ï¼?表é?¢ç?ç³?åºþ??äº?Ra0.2å¾?±³ï¼?å®??°ä?è½?³»?¶ä»¶?????¢å¾®ç±³çº§??å·¥ã??该æ????§£?³ä???件å??¹é????¤©å§¿æ?§ç±»?¶ä»¶????å·¥é?¾é?ï¼?大å???ä½???å·¥æ??????