望远镜的物镜必须精确置于中心上.The object glass of a telescope must be accurately centred.此物镜仅产生很小的散射光.This objective produces only very little scattered light.由单透镜组成的物镜可作目视和照相观测用.Objectives which consist only of one lens can be used f...
Objective To evaluate the effects of allograft fusion cage ( AFC ) on anterior cervical interbody fusion.目的了解同种异体骨圈 ( allograftfusion cage, AFC ) 在颈椎前路椎体融合术中应用的效果.BK virus - associated nephropathy can progress to renal a...
摄影师往后退开，好让我们查看尸体。The photographers drew back to let us view the body.教堂会众在他们进来时稍稍往后退了退。The congregation fell back from them slightly as they entered.我小心翼翼地后退，直到感觉后背碰到了墙壁。I backed up carefully until I felt the wall agains...