I would stand and watch the two white men grinding lenses on the machines.
我站着看那两个白人在磨床上磨镜片。
grind a knife, lens, etc on a stone, etc
在石头等上磨刀、 镜片等.
This optical instrument factory makes lens with accurate optometry and fine grinding.
该光学仪器厂的镜片制作，验光准、磨制精。
Numerical Control Lens-edging System Hardware Design and Tracer Software Development;
镜片磨边数控系统硬件设计与扫描机软件开发
Research on Mechanical Design and Numerical Control Software Development in Lens Edging System;
镜片磨边系统中机械设计及数控软件的开发
were scratches left by the grinder?
磨镜工留下的磨痕。
Spectacles lenses
GB10810-1996眼镜镜片
A single lens in a pair of glasses; a monocle.
单片眼镜一对眼镜片中的一个单透镜；单片眼镜
Eyeglasses having trifocal lenses.
有三焦距镜片的眼镜
An ophthalmologist's or optometrist's written instruction, as for the grinding of corrective lenses.
眼科医生所写的处方由眼科医生或验光师开的书面指示，如为了磨制合适的镜片而开的验光单
making and testing of astronomical mirrors
天文镜面的磨制和检验
A glass slide for use with a microscope.
载片显微镜承物玻璃片
Grinding Performance of Soft Abrasive Grinding Wheel Used in Ultra-precision Grinding Sapphire Substrate;
超精密磨削蓝宝石基片的软磨料砂轮磨削性能
Development of Soft Abrasive Wheel Used in Ultra-precision Grinding Silicon Wafer
超精密磨削硅片的软磨料砂轮的研制
The Effect of Disc Abrasion on Pulp Refining
磨片磨损对打浆生产使用效果的影响
The methods to extend the service life of disc plate for pulping equipment by optimal processes
工艺优化延长磨浆机磨片寿命的方法
worn clutch facing
磨损的离合器摩擦片
disc wheel for steel wire needle sharpening
磨钢丝针用薄片砂轮