工件

A method of determing the workpiece coordinate system and manual presetting cutter operation are introduced.

介绍数控车、铣床工件坐标系的确定以及与其相关的手工对刀操作。

Second,effect of several error factors,such as tool presetting error,non-parallelism er...

通过上述分析，确定试验台两轴不平行是影响工件面形精度的主要误差因素。

The weight percentage for the components of the hyaline coating is as follows: SiO2 45 to 54 percent, B2O3 15 to 20 percent, one or more of Na2O, K2O and Li2O, 10 to 24 percent, one or more of TiO2, ZrO2 and ZnO, 6 to 18 percent , and the rest is one or more of CaO, MgO and CeO2. Firstly, the glass powder is mixed with the mill additions to be pulped and then plated on the surface of titanium or the titanium alloy. After being dried, the surface of titanium or the titanium alloy is directly used for a thermal hydrogen treatment or smelted at a temperature of 900 to 1, 000 DEG C for 15 to 30 minutes and then a hyaline coating with a thickness of 20 to 70 micrometers is formed on the surface of titanium or the titanium alloy; secondly, titanium or the titanium alloy plated with the coating is conducted a thermal hydrogen treatment. After the treatment technique is finished, the coating flakes off automatically in the process of cooling; and finally, a surface treatment is supplemented to meet the requirement of the workpiece surface.

该玻璃质涂层成分按重量百分比：45-54SiO2，15-20B2O3，10-24Na2O、K2O、Li2O中的一种或多种，6-18TiO2、ZrO2、ZnO中的一种或多种，余量CaO、MgO、CeO2一种或多种，将玻璃粉与磨加物混合制浆并涂覆在钛或钛合金表面，干燥后直接用于热氢处理，或在900-1000℃下熔烧15-30min，在钛或钛合金表面制得20-70微米玻璃质涂层，随后将制有该涂层的钛或钛合金置于氢气气氛下进行热氢处理，处理工艺结束后，涂层在冷却过程中自剥落，最后辅以表面处理即可满足工件表面要求。

When radiographing the curved components whose convex side is toward the source and viewing single wall, location markers shall be used.

曲面工件，凸面对着射线源作单壁透照时，定位标记应在。

Because lathes also can do drilling and reaming, their versatility permits several operations to be done with a single setup of the workpiece.

由于车床还可以用来钻孔和铰孔，车床的多功能性可以使工件在一次安装中完成几种加工。

In shaping, the cutting tool on a shaper reciprocates or moves back and forth while the work is fed automatically towards the tool.

在仿型刨削操作中，仿型刨床上的刀具作往复或前后移动的同时，工件被自动推向刀具。

In shap in g, the cutt in g tool on a shaper reciprocates or moves back and forth while the work is fed automatically towards the tool.

在仿型刨削操作中，仿型刨床上的刀具作往复或前后移动的同时，工件被自动推向刀具。

This machine is widely used, in the plants manufacturing or using cooling dies, for the integral g- rinding of dies with shank or guide-pillar , or to grind an inside cave shaped or crown shaped bench surface on a circular disc type work piece.

普遍适用于制造或使用冷冲模具的工厂带模柄或导柱的冲模在本机床上整体修磨，也可用于圆形盘类工件中凹、中凸台阶平面的磨削。

Moreover, these parts should be shotblasted or sandblasted to remove the scale layer.

此外，这些工件必须经过抛丸或喷沙处理，以去除脱碳层。

In addition,this fluid can prolong the service lives of cutting tools and grinding wheel,enhance their working efficiency,and decrease the surface roughness of the workpiece as well, instead of the traditional saponified oil and emulsion.

它是由防锈剂、抗磨剂、防腐剂和多种表面活性剂复配而成，具有优良的冷却润滑和清洗防锈能力，能延长刀具和砂轮的使用寿命，提高工件表面光洁度和工作效率，可代替传统的皂化油和乳化液。

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。