单词	轴承滚珠
释义	轴承滚珠bearing ball
随便看	collision--density collision detect collision detection collision diagram collision diameter collision domain collision dynamics collision efficiency collision energy loss collision energy transfer collision enforcement collision excitation collision factor collision fequency collision-- forward scattering collision-free collision-- free-electron collision-free plasma collision frequency collision-frequency factor collision frequency of ijons collision frequency of ions collision gas collision gas cell collision-- generating