查询词典 casing pipe

All the plastics pipe system is a good example of the latter. This uses a plastic service pipe instead of the usual steel or copper pipe.

后者的最好例子是所有管路系统采用塑料管，用塑料管来代替通常用的钢管和铜管。

All the plastic s pipe system is a good example of the latter. This uses a plastic service pipe instead of the usual steel or copper pipe.

后者的最好例子是所有管路系统采用塑料管，用塑料管来代替通常用的钢管和铜管。

Self-Exciting Mode Oscillating-Flow Heat Pipe, also called pulsating heat pipe or oscillating heat pipe, is a novel heat transfer device that has an excellent heat transport performance.

自激振荡流热管也称为脉动热管，是一种新型高效的传热元件。本文提出了采用脉冲加热代替常规连续热源加热强化自激振荡流热管传热的方法，并对其进行了实验研究。

The VCL method and the displacement method are used to calculate the Stress Intensity Factors of semi-elliptical surface crack at the root of pipe screws, on the basis of which a simplified calculating model for screws contact is put forward so as to analyse the fracture intensity for oil drill pipe screw coupling. For the semi-elliptical surface crack with different shape and deep ratio at the root of female and male screws and the corner of male flange, the SIF has been studied systemically under inter-pressure, tension, bend and torsion loads and the approximate formulas encluding the structure parameters of oil drill pipe screw coupling, deep ratio and the shape parameters of surface crack are developed.

对工程实际中的多种石油钻杆接头螺纹连接件，就公螺纹齿根、母螺纹齿根、公螺纹台阶转角处存在的不同形状、不同厚度比的半椭圆表面裂纹，在拉伸、内压、弯曲、扭转多种载荷作用下的应力强度因子作了系统研究，在大量有限元计算基础上，建立了包含接头结构参数、裂纹形状、厚度比在内的近似计算公式。

In the light of geological characteristics of Dongfang 1-1 Gas Field, mass indoor experiments are conducted and studied. Sand grain level are analyzed, the sand control parameters and screen pipe and blind pipe combination proportion is optimized. On this basis, the most suitable horizontal screen pipe sand control method for this gas field is found. Through the medium of DONGFANG 1—1 gas field field conduct proven, the sand control technology are completely run up to DONGFANG 1-1 gas field completion require.

针对东方1—1气田的具体地质特征，通过大量的室内实验研究，对地层砂粒度进行了分析和分选性研究，对防砂参数和筛管与盲管的组合比例进行了优化，从而找出最适合该气田的水平井筛管防砂完井方法，通过东方1—1气田的现场实施证明，该防砂技术完全达到了东方1-1气田完井的要求。

Pipe vs. resonance chamber: Limited by the industrial design, it is hard to set microphone near the surface of the case. Therefore we use a pipe to lead the sound, but the frequency response might loss if the length of pipe is too long or the volume is too big.

导音管vs。音腔大小因为ID的问题，麦克风的安装位置往往不能贴近机壳的表面，会以导音管的方式导入声音，但太长或是容积太大的导音管会使频响不平。

The results showed that the performance of the drill pipe joints was in line with standard and the main reason was that the making up torque was inadequate.Drill pipe joints in underground unrestrained tightening-up caused the drill pipe joints to bear the excessive load more than their anti-torque yield strength.

结果表明：钻杆接头的各项性能指标均符合标准规定，失效的主要原因是上扣扭矩不足，钻杆接头在井下无节制旋紧，致使钻杆在井下的自上扣扭矩超过了钻杆接头的实际抗扭屈服强度。

The force on the jet pipe in the hole jetted is analyzed, and it is indicated that the resistance on the jet pipe is the main factor influencing the feeding of jet pipe.

分析了喷管在喷孔内的受力，指出喷管在喷孔内所受的阻力是影响喷管送进的主要因素，据此调节喷管送进控制液缸控制腔的压力可控制送进速度和限制最大推力。

It firstly did numerical simulation towards pulsed liquid jet pump's throat pipe when it was working on different area ratio, different length of throat pipe, different working situation. Then it analyzed and proposed the optimization length of throat pipe on pulsed liquid jet pump; In chapter 5, it did experimental study on the fundamental performance of steady and pulsed liquid jet pump, then compared the experiment result with numerical simulation result, this approximately agreed with each other.

首次对脉冲液体射流泵在不同面积比、不同喉管长、不同工况下的喉管内部流场进行了数值模拟，分析提出了脉冲液体射流泵的最优喉管长度范围；第五章对恒定、脉冲液体射流泵的基本性能进行了试验研究，对比试验结果和数值模拟结果，二者吻合较好。

To reflect the mechanical behavior of a real pipe bearing in ner water pressure,a loading method by inner water pressure is used in this test.The loading equipment and a part of measuring devices are d esigned and made by ourself.Compare tests and theory analysis have wor ked out for the performance of the steel fiber reinforced concrete pip e,the reinforced concrete pipe,the pipe with steel fiber reinforced co ncrete and steel bar under the inner pressure.

为真实反映混凝土压力管在内水压力作用下的受力状况，采用自行设计制作的一套加载设备和部分测试设备，对钢纤维混凝土压力管、钢筋混凝土压力管及配筋钢纤维混凝土压力管，进行了内压性能对比试验研究及理论分析。

The statistical analysis of this large set of mutations has led us to propose a diagnostic strategy that should help with the molecular work-up of optic neuropathies.

这一大系列基因突变的统计学分析引导我们提出一个诊断策略，可以帮助我们对视神经病变进行分子学的诊断检查。

The results show that the pipe grouting changes the mechanical parameters of surrounding rocks to achieve the security of engineering objectives by reinforcing surrounding rocks and bolcking the water.

研究表明：小导管注浆一方面改变了围岩的力学参数，另一方面利用浆液的固结特性可以实现堵水和加固围岩的工程目标，使隧道在开挖过程中的安全得到保障。