查询词典 screw hole

For example, every rivet or screw in the junction are a lot of pressure on the media, and this may lead to material deformation or damage, the hole in the material may also lead to leakage or loose, together with mechanical fasteners are visible position, to have it hidden, or to identify the surface rendering, we will encounter some difficulties.

比如，每个铆钉或螺钉在连接处都对介质有很大压力，也许能导致材料变形或损坏，在材料上打孔也可能导致泄漏或松脱，再加上，机械扣件都是在显眼的位置，要把它掩藏或给标识进行表面绘制时就会遇到一些困难。

When the oil level in the lower casing reaches the intermediate mark in the oil window (not stop feeding oil to the gear reducer from filter press), startup oil pump in the lubricating station to feed oil to lower casing. In order to assess the oil level in the upper casing, it is allowed to remove the plug screw of observation hole at thrust bearing oil sump in the upper casing.

较为方便的方法是拆除减速机箱体中分面法兰上的呼吸器，利用其安装孔对减速机下箱体进行加油，当减速机下箱中的油位到达后油窗中间刻线时（不停止滤油机对减速机的加油），可以启动润滑站油泵对减速机上箱体进行加油。

Step 4. Drive a sheet metal screw into thin metals after making a pilot hole.

先在铁板上钻一个预制孔，然后拧入自攻螺丝。

A hole with the top part enlarged so that the head of a screw or bolt will lie flush with or below the surface.

埋头孔顶部扩大的孔，为使钻或螺栓的头与地面相平或在地面以下

A small block of metal or wood with a central, threaded hole that is designed to fit around and secure a bolt or screw.

导索器绳索穿过其中以固定绳索或防止绳索受到磨损的设备，如一圆环或有一洞的木块

2 The provisions of valve flap stent thrust nut in space; 4.3 will bring more than ejector stem components, and into the valve flap bracket, now can adjust screw ring on the injector; adjustment ring discharge pipe may be twisted too high in case of this case, when the valve assembly after the valve flap in contact with its seat before the valve flap seat will have an additional load on the adjustment ring edge, in order to avoid this from happening, should enable the adjustment ring hole just below the injector thread, through which holes should not be able to see thread.

4.2 规定阀瓣支架与止推螺母中的间隙； 4.3 将喷射器提起超过阀杆组件，并放到阀瓣支架上，现在可以把调节环拧在喷射器上；调节环可能在排放管上拧得太高，如遇此情况，当阀门组装后，在阀瓣与其座相接触前，阀瓣座将加载荷于调节环的边上，为了避免此情况的发生，应使调节环上的孔正好低于喷射器的螺纹，通过这些孔应不能看到螺纹。

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Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。