词汇	roll-up screen
释义	roll-up screen 卷式银幕
随便看	displacement jump displacement jump condition Displacement kerma factor displacement kernel displacement kill method displacement knob displacement law displacement law of radionuclide displacement length displacement length coefficient displacement-length coefficient displacement length ratio displacement-length ratio displacement level displacement level meter displacement limit displacement line displacement liquid displacement-load curve displacement loading displacement loop displacement loss displacement magnification displacement magnification mechanism displacement manifold