1ãä½ç¨æ¯ç¼å²ï¼é¢ççåå½¢ç伸缩éã
2ãå«åæå«å¨è¢«è¿æ¥ä»¶ä¸èºæ¯ä¹é´çé¶ä»¶ãä¸è¬ä¸ºæ平形çéå±ç¯ï¼ç¨æ¥ä¿æ¤è¢«è¿æ¥ä»¶ç表é¢ä¸åèºæ¯
æ¦ä¼¤ï¼åæ£èºæ¯å¯¹è¢«è¿æ¥ä»¶çååã
3ãå«åå为ï¼å¹³å«å-C级ã大å«å-AåC级ãç¹å¤§å«å-C级ãå°å«å-A级ãå¹³å«å-A级ãå¹³å«å-åè§å-A级ãé¢ç»æç¨é«å¼ºåº¦å«åãçé¢å«åãé¥é¢å«åãå·¥åé¢ç¨æ¹æå«åã槽é¢ç¨æ¹æå«åãæ åå弹簧å«åãè½»å弹簧å«åãéå弹簧å«åãå
齿éç´§å«åãå
é¯é½¿éç´§å«åãå¤é½¿éç´§å«åãå¤é¯é½¿éç´§å«åãåè³æ¢å¨å«åãåè³æ¢å¨å«åãå¤èæ¢å¨å«åãåèºæ¯ç¨æ¢å¨å«åã