1.Toolsetting and installing of coordinate system of workpieces are important tasks while machining numerically controlled machines.
数控机床加时,对刀及件坐标系的定是一项重要作。
2.The optimeter is widely used to precisely measure external size of workpiece by comparison with a gauge block or standard part.
本仪器是一般是用标准器（如量块）以比较法测量件的尺寸。
3.The system uses PLC procedure control, start-up, forward or backward soldering gun, arc starting, workpiece circumgyration, etc full welding process all can complete automatically.
系统采用PLC程序控制，启动、进退枪、引弧、件旋转全过程均能自动完成。
4.Material removal by machining involves interaction of five elements: the cutting tool, the toolholding and guiding device, the workholder, the workpiece, and the machine.
材料的切削与5个因素有关：刀具，刀具的夹具和导向装置，件的夹具，件和加机器。
5.In this paper,the mechanism of workpiece burn during grinding of casehardened steel and titanium alloys was studied by the use of SEM,EPMA,XPS and the metallograph analysis.
,基
的;
时,对刀及
定是一项重要
件,
全过程均能自动完成。
硬化钢和钛合金的烧伤机理。
