查询词典 tubular

To solve the problem with the manual measurement of the length of the oil country tubular goods, the laser length measuring instrument is applied.

传统的石油专用管材长度测量主要依靠人工用皮尺来测量，采用人工记录费时、费力并且容易出错。

Steelmakers said China's overcapacity to produce oil country tubular goods steel-pipes and tubes used mainly for energy exploration-poses an imminent threat to the U.S.

美国钢铁生产商说，中国生产主要用于能源勘探的石油专用管材的能力过剩已经给美国钢铁业造成了直接威胁。

Department of Commerce decided to levy a tariff on Chinese oil country tubular goods.

9月9号，美国商务部决定向中国制造旳石油井管产品加收收10.9％到30.6 ％不等的关税

On November 5, the U.S. Department of Commerce announced its intention to impose a 36.53-percent duty on oil country tubular goods from 37 Chinese companies and a preliminary anti-dumping rate of 99.14 percent on products of some other Chinese companies.

在11月6日，美国国际贸易委员会宣布其决定征收反倾销、反补贴关税，从中国进口的涂布纸，印度尼西亚，以及monopotassium钾钠，磷酸氢钾磷肥，从中国进口的。

The small cylinder designed which circumerence are 182mm, to sews small-sized tubular goods more conveniently.

细筒型设计：采用圆周182mm的细筒型设计，车缝小口径的圆筒型针织物，更加便利。

Department of Commerce announced its intention to impose a 36.53-percent duty on oil country tubular goods from 37 Chinese companies and a preliminary anti-dumping rate of 99.14 percent on products of some other Chinese companies.

5号，美国商务部宣布打算对中国37家公司输美石油井管征收36.5%3的关税；对其他中国公司输美倾销商品初步征收99.14%的反倾销税。

the practice has been the university practices the teaching essential important link, to the university student, passes through the tubular goods specialized student specialized knowledge particularly consolidated and the utilization plays the unreplaceable role.

摘 要：实习一直是高校实践教学不可缺少的重要一环，对高校学生，尤其是经管类专业的学生专业知识的巩固和运用发挥不可替代的作用。

In light of the recent ten years'experience in OCTG mill supervision carried out by the Tubular Goods Research Center of CNPC, the importance of OCTG mill supervision is discussed and its practical experience is summarized.

油井管驻厂监造是从根本上保证油井管实物质量的重要措施和手段之一。

How to study the corrosive factors of media corrosion in oil and gas gathering pipelines under the condition of multiphase flow is discussed and mathematical models are established. The effects of media flow rate, oxygen content, pH, salinity, temperature, pressure of CO2 and water content on 20(superscript #) tubular goods are introduced.

讨论了在多相流条件下如何对油田集输管线介质进行腐蚀因素研究并建立数学模型，研究了集输管线介质流速、含氧量、pH值、矿化度、温度、二氧化碳分压、含水共7个因素对20材管材的腐蚀影响趋势。

However, as a result of the present stage society system, the enterprise idea, university resources' many reasons, the university walks into the serious practice difficult position after the tubular goods college major.

然而，由于现阶段社会体制、企业观念、高校资源的诸多原因，高校经管类专业学生走入严重的实习困境。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。