工件

When using an , you don't only need to adjust the perpendicularity between end plane and axes, but also need to adjust the position of four jaws to make the center of workpiece's front face coincides with lathe spindle.

使用四爪卡盘时不仅要调整端面与轴线的垂直度，还要调整四爪的位置，使工件前端面的圆心与车床主轴重合。

In face milling the generated flat surface is at right angles to the cutter axis and is the combined result of the actions of the portions of the teeth located on both the periphery and the face of the cutter.

在两种铣削方法中，切屑的形成是不同的，逆铣过程中，刀具有推动工什丌使工件从工作台上提升的趋势，这种作用有助于消除铣床工作台进给螺杆和螺母间的间隙，从而形成平稳的切削。

When face milling is performed, the table can be moved longitudinally to feed the workpiece under or below the cutter

铣削端面时，为了将工件送到刀具底下或下方，工作台可以纵向移动。

Also, the grinding action in this case is achieved by the end face of the grinding wheel (Fig.8.1b), contrary to the case of horizontal-spindle machines, where the workpieces ground by the periphery of the grinding wheel.

而且在这种情况下，磨削动作是通过砂轮端面完成的(图 8.1b)，这与通过砂轮周边磨削工件的卧式主轴磨床正好相反。

It breaks out the traditional anode-oxidation technique of forming oxide coating according to Faradays law, and forms oxide coating in micro plasma areas. It has the characters of simply technique, high efficiency, no pollution, etc.

它突破了传统的阳极氧化在法拉第区内成膜的限制，可在微弧区中氧化成膜，而且它具有工艺简单、效率高、无污染、处理工件能力强等特点。

The lathes are usually powered by electric motors which, through various gears, supply the necessary torque to the work material and provide the feed motion to the tool.

车床通常是电动机驱动的，通过不同的齿轮系统，向工件提供必要的扭矩，使刀具进行进给动作。

The shaper tool straight line advance and return movement is host motion when plane chop, that workpiece moves in the perpendicularity and host direction of motion intermittence is to feed motion.

刨削时，刨刀的直线往复运动是主运动，工件在垂直与主运动方向的间歇移动是进给运动。

Planer is to adopt a working table to compose linear motion moving back and forth with workpiece but then , the cutter assumes but blank feed the motion moving assigning a form transversely.

而龙门刨床则是采用工作台带着工件作往复直线运动，而刀具作间歇的横向进给运动的运动分配形式。

Both numerical control induction machine tool X-Z axis and slew workbench of part drive by numerical contral, the coil feed motion is drived with servo motor which joins to ball screw assemblly to carry out.

数控感应淬火机床X-Z轴和工件的回转工作台均采用数控驱动，感应头的进给运动通过伺服电机带动滚珠丝杠来实现。

Motor driven ball screw to achieve the main cutting me up and down the movement; the main movement is driven by the hydraulic motor rotating the spindle in order to achieve the cutting tool on the workpiece; radial feed through the nut and screw to achieve manually.

电机带动滚珠丝杠实现主切削箱的上下运动；主运动是由液压马达带动主轴的旋转，从而实现刀具对工件的切削；径向进给是通过螺母与丝杠手动实现的。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。