查询词典 jacket collar

As such, magnetic particle inspection for the screw thread of the drill collar is very necessary and important.

因而钻铤内外螺纹的磁粉检测十分必要和重要。

In the event failures of boring tools, the fatigue failure of the drill collar is especially prominent.

在钻具失效事故中，钻铤的疲劳失效尤为突出。

It is shown through computation that the orientative exploring capacity of the tool is greatly enhanced because of the existence of the drill collar.

计算发现，钻铤的存在大大提高了仪器的定向探测性能。

They found that more than 80% of the failures can be attributed to fatigue or fatigue related failures and most of them occur at the screwed joint of the drill collar.

石油管材研究所对近几年失效事故进行分析，有80％以上失效属于疲劳或与疲劳相关的失效，其中绝大部分发生在钻铤的螺纹联接处用。

A type of logging-while-drilling density log in which the density is measured at different azimuths around the drill collar.

一种随钻密度测井，测量钻铤周围不同方位的密度。

Take that drill collar up to the derrick floor?

把那根钻铤拉到钻台上来。

In drill ing exploration and well drill ing Industry, the drill ing pipe and drill collar are key apparatus.

例句1。钻杆和钻铤等管状螺纹连接件，是钻探和石油钻井工业中的关键设备。

The company employs 300 employees, including three professors, 12 senior engineers and 37 engineers, devoting to the research and development of drill pipe and drill collar.

公司坚持"以科技为先导，以客户为中心，以市场为导向"的宗旨，走"专、精、特、新"发展之路，为把公司建设成为开放型、国际化、现代化的企业而努力。

Because its rigidity are less than the drill collar, less contact area with wall of a well , is also not easy to form differential pressure sticking.

由于其刚性比钻铤少，和井壁接触面积小，也不容易形成压差卡钻。

Drill collar thread ; finite element method ; stress ; structure optimization

钻铤螺纹；有限元；应力；结构优化

As a dominant party,CPC government should play a guardian,supervisee and guarantee role to overcome all the difficulties in the development of charitable cause and bring it into full play in the establishment of harmonious society on policies and regulations basis.

在中国共产党的文献中第一次把发展慈善事业提到&最广泛最充分地调动一切积极因素，不断提高构建社会主义和谐社会的能力&的高度来认识。近年来，社会学界对慈善事业的理论专著发表较多，有鉴于此，笔者不揣浅陋，谈谈自己的认识和见解。

Flow through the land, the land of the scale of operation allows the effectiveness of the land may be raised.

通过土地的流转，土地的规模经营可以让土地的效益得到提升。