All rig personnel should not energy to tighten or loosen unions or other connections of pipe under pressure.
任何井队人员都不能在带压力的情形下松紧由壬或其他管线的连接。
All rig personnel should not attempt to tighten or loosen unions or other connections of pipe under pressure.
任何井队人员都不能在带压力的情况下松紧由壬或其他管线的连接。
This pressure must be under control, and we control it by means of the mud which we circulate down the drill pipe.
这种压力必须加以控制，我们让泥桨顺着钻杆向下循环，用这种方法来控制压力。
Pipe produced from a solid billet that is heated and rotated under pressure.
由实心坯制成的管子，该实心坯在压力下加热和旋转。
This pressure must be under control, and we control it by means of the mud which wecirculate down the drill pipe.
这种压力必须加以控制，我们让泥桨顺着钻杆向下循环，用这种方法来控制压力。 。
Sensitive materials under low stress will suffer breakage which brings about large risk explosion of pressure bearing pipe and equipment is easily to be triggered causing major accident.
对于敏感性材料，在低应力水平下也会发生断裂，危险性很大，容易引发承压管道和设备的爆破，造成重大事故。
In service pipeline non-stop transmission welding is a method to maintenance and rebuild pipeline under welding pipe of certain transmission amount, flow speed, pressure status.
在役管道不停输焊接是在一定的输量、流速、压力的状态下焊接管件，对管道进行维修、改造的一种方法。
The stress distribution of a curved pipe with an initial elliptic cross section under internal pressure was studied by using electric resistance strain method.
采用电阻应变测量技术研究了带有初始随圆度的弯管在纯内压作用下的应力分布。
The stress state of the circular culvert pipe under soil pressure at rest is analysed with the photoelastic simulated test of the epoxy resin model frozn.
利用环氧树脂模型进行光弹性冻结试验，模拟受填土压力作用时的土坝坝下圆型涵管的受力状态。
In the experimental study, the pressure surge data are acquired at 26 points from the taper pipe intake to the draft tube exit distributing at 8 sections under 6 stable operating conditions.
对水轮机模型，测取了从直锥段进口至尾水管出口8个截面共26个测点在6个稳定运行工况下的水压力脉动数据。
This paper presents pressure drops for vertical pipe in dense-phase pneumatically conveying pulverized coal under high pressures by a method of experimentation and analytical calculation.
该文通过试验和理论计算两种方法研究了高压下煤粉密相气力输送垂直管段的压力损失情况。
An approximate method for calculating the elastic stresses at the squeeze at the squeeze corner sections of an identical diameter Tee branch pipe connection under internal pressure was presented.
针对石油化工行业大量采用的等径挤压三通，提出了一个计算内压载荷下的纵向平面内挤压圆角处各应力分量的近似方法。
This Paper conducted a pilot study by the following three areas:Firstly, pressure fluctuation experiments of UPVC single pipe, double pipe under the steady pressure condition were conducted.
本文主要进行了以下三方面试验研究：第一，稳定压力下UPVC普通单立管、双立管压力波动的模拟试验。
We have established the continuity equations under train pipe leakage condition and presented an explicit finite difference method to solve the pressure-velocity coupling equations.
建立了考虑列车管泄漏的连续性方程，给出一种求解压力速度耦合方程的显式有限差分算法。
By this way the burst cement pipe could be repaired under water flow with working pressure.
叙述了带水带压使用导气导流法，辅以快速堵漏剂进行维修的新方法。
The adopted thickness of steel pipe and the economic flow rate in it under different pressure and working conditions are described in this paper.
本文研究钢管的使用壁厚以及不同工作压力及使用状况下的经济流速。
It can move under well, saving gas pipe, reducing the loss of pressure, decreasing energy consumption as possible.
可在井下移动，节约大量输气管道，减少压力损失，最大限度降低能耗。
Wire wrapped on cement pipe occurs brittle fracture in crack of cement pipe supplying water under pressure.
水泥管在输水加压后产生爆裂，水泥管缠绕钢丝产生脆断。
The hydraulic drive plunger diaphragm pump is a new type of high-pressure pump for slurry pipe transportation, which is now under development.
液动柱塞隔膜泵是一种新型的高压浆体管道输送泵，目前正处于研制之中。
The hydraulic drive plunger diaphragm pump is a new type of high-pressure pump for slurry pipe transportation, which is now under development.
液动柱塞隔膜泵是一种新型的高压浆体管道输送泵，目前正处于研制之中。
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