back of the throat
后焦平面
back focal plane【摄】
暂无补充释义。
相关词条
back-up
back teeth
back porch
back focal length
Back Fresh
back center (lathe center)
back lash
back focal plane【摄】
暂无补充释义。
back of the throat
back-up
back teeth
back porch
back focal length
Back Fresh
back center (lathe center)
back lash