词汇	oil control ring
释义	oil control ring 护油圈,护油环
随便看	velocity vector velocity vector at center of mass Velocity vector image Velocity vector imaging Velocity Vector Measurement Velocity Vector Measurement System velocity-vector measuring system velocity versus altitude graph velocity vibration velocity vibrograph velocity voltage velocity voltage analogy velocity volume curve velocity-volume curve velocity vorticity approach velocity vs porosity relationship velocity wave velocity wave, velocity waveform velocity wave form velocity-waveform-amplitude velocity-wave number filtering velociy resonance velo cloud veloclty function