Spring: Elastic machine component able to deflect under load in a prescribed manner and to recover its initial shape when unloaded.

 
  • 彈簧:一種有彈性的機器組件,能在承載時(shí)變形到預期的狀態(tài),卸載后又恢復到原狀。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan