查询词典 tubular

However, the study of solid expandable tubular technology is only limited to mechanism study and experiment in China.

在国内，膨胀套管技术的研究还仅限于机理研究和实验阶段。

Based on the existent search fruit, this thesis studied the structure design and mechanism of solid expandable tubular.

本文在前人研究的基础上，对膨胀套管的结构设计和技术机理进行了研究。

However, there are many reports about accidents caused by collapse of the fasten-style tubular steel scaffolding and falsework system, which results in substantial economic loss and casualties.

近年来，发生了许多重大的脚手架和模板支撑架的安全事故，据统计，基于脚手架事故占建筑事故的25％以上，给人们生命、财产造成了重大的威胁。

The dissertation introduced the features of fastener of fasten-style tubular steel falsework and different M-θ models of semi-rigid connections.

本文介绍了扣件式模板支撑架的扣件连接特性、主要的半刚性连接M-θ模型。

PP woven bag production line, plastic woven sack machine equipment, This machine is used to weave endless tubular or flat heavy or light fabric of pp or hdpe for jumbo bags, container bags, geotextiles, tarpaulins, etc. We make various kinds of paper bag production line, plastic woven bag machine and equipment, cement bag machine and equipment, fertilizer bag machine and equipment, feedbag machine and equipment, rice bag and flour bag machine and equipment, sugar bag machine and equipment, fibc, container bag, big bag, jumbo bag machine, tarpaulin equipment, shopping bag, t-shirt bag, film cover machine and equipment, mesh / net leno bag machine and equipment for fruit and vegetable our machinery are well sold in more than 20 countries worldwide.

聚丙烯编织袋生产线，塑料编织袋机器设备，这台机器是用来编织无休止的管状或持平重型或轻型织物聚丙烯或高密度聚乙烯的巨型包，容器袋，土工布，防水油布等我们做出各种纸袋生产线，塑料编织袋机器和设备，水泥制袋机和设备，化肥袋机器和设备， feedbag机器和设备，大米和面粉袋制袋机和设备，糖袋机械和设备，集装袋，集装箱袋，大袋，大型制袋机，油布设备，购物袋， T恤袋，地膜覆盖机和设备，网格/净杰伊莱诺制袋机和设备，用于水果和蔬菜的机械已远销20多个国家的世界各地。

The cables in the festoon system are mounted on cable carriers and can be tubular or flat cables.

拖令系统中的电缆被安装在电缆载体上，电缆可以是圆形的，也可以是扁平的电缆。

The cables inthe festoon system are mounted on cable carriers and can be tubular orflat cables.

电缆 这个festoon系统安装在有线电视运营商，可以管状或扁平电缆。

The fundamental formulae of magnetic field were used to deduce the formulae for the three-dimensional magnetic field of tubular magnet.

应用磁体空间磁场规律的基本公式，推导了管柱形永磁体的三维空间磁场规律计算公式。

The results show that dynamical ductil-ity dominated final velocity of fragments. During tube expansion, the shear fracture appears preferentially a-long the adiabatic shear bands under positive stress, so the adiabatic shear band determines the size and shapeof fragments. Though the fragmentation behaviour of medium carbon Si - Mn bainific steel is close to that ofsteel 50SiMnVB, medium carbon Si - Mn bainitic steel is an ideal candidate material for the tubular bombs be-cause it is better in dynamical ductility, which can enable the tubes to gain high speeds before fragmentation.

结果表明：材料动态塑性是决定破片最终速度的主要因素；圆管膨胀时外表面形成以剪切为主的裂纹，并向内扩展，接近内表面的绝热剪切带伴随着圆管的膨胀而扩展，并未出现失稳现象，但在正应力的作用下成为优先的断裂通道、决定破片的尺寸和形态；中碳Si-Mn贝氏体钢与50SiMnVB钢的破碎性能相近，但贝氏体钢动态塑性很更好，破碎前的膨胀量较大、更有利于提高破片初速，是弹箭比较理想的候选材料。

Tubular receiver, which also serves as a barrel jacket at the front, contains a cylindrical bolt with fixed firing pin.

管接收机，这也为在前线每桶夹克服务，包含一个固定的撞针圆柱螺栓。

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。