Before making mud, clean all the circulation pipe-line and mud pits.
配浆前要认真清洗循环管线和配浆池。
Rifled or other pipe wall corrugation may change the flow from a hetero-generous to a homogeneous regime by introducing a secondary circulation.
在有来复线的或其它的管壁皱纹的管中，由于引起副流，可能将非均质流转变为均质流。
The characteristics and applications of the thin plate fixed bed adsorbers in the circulation ventilation pipe systems were presented.
介绍了薄平板型固定床吸附器在循环通风管路系统中的使用特性和应用效果。
This paper analyzes the corrosion problem of absorption and circulation sulfate tank and defects in original water supply pipe design, recommends a new water supply pipe developed by F4 material.
分析硫酸吸收循环槽加水管的腐蚀问题及加水管原设计中存在的缺陷，介绍采用F4材料研制的新加水管。
The theoretical model was established to describe steady state circulation flow of a single loop pulsating heat pipe(PHP)with thermo-mechanical and hydrodynamics analysis.
分析显示，稳定循环时，系统循环体积功用于克服系统循环耗散功，而系统循环耗散功（热）与热管传热量呈一定关系。
The influence of outlet circulation of mixed-flow pump on the hydraulic performance of the outlet pipe was studied in this dissertation.
本文主要研究混流泵出口环量对泵出水管道水力特性的影响。
The procreative blanking plug of the "Y type" pipe string has check valve function and it can conveniently for reverse circulation well cleanup.
型管柱中的生产堵塞器具有单流阀作用，可方便进行反循环洗井；
The tunnel furnace is designed as a channel type, the drying tunnel furnace is heated by the stainless steel heating pipe and the hot air circulation is carried out by using the 3 typhoon machine.
隧道炉设计为通道式，烘干隧道炉为不锈钢加热管升温并使用3台风机进行热风循环。
A new kind of high efficient self evaporating circulation rotating heat pipe cooling technique for the rotor of a continuous mixer has been proposed, and simulated test has been investigated.
提出一种新型高效自蒸发循环旋转热管冷却技术来冷却连续混炼机的转子，并进行了模拟试验研究。
A new classification for stuck pipe is presented in which the stuck pipe can be divided into mechanical, differential and circulation sticking.
提出了将卡钻类型分为机械卡钻、压兰卡钻和循环卡钻三类的新方法。
The heat balance and characteristics of steady state circulation flow of a single loop pulsating heat pipe was studied with thermo-mechanical analysis.
分析显示，稳定循环时，系统循环体积功用于克服系统循环耗散功，而系统循环耗散功（热）与热管传热量呈一定关系。
A new type of moving petticoat pipe structure and petticoat pipe seal which fit for forced circulation way is introduced. A kind of flexible fastening of moving petticoat pipe is also recommended.
并介绍了一种适合强制循环方式的新颖的活动烟罩和烟罩密封形式，推荐了一种活动烟罩管道柔性连接件。
The advantages of gas drilling are: high drilling efficiency, effectively controlling formation damage, preventing from lost circulation and adhesive drill pipe sticking.
气体钻井的优点有：钻井效率高、有效保护油气层、防止井漏和黏附卡钻。
The YH - L2600 Fresh air Supplier is installed in the main entry air pipe of air condition system. Its heat transfer efficiency is not affected by the circulation of its fans and air humidity.
L 2600新风换气机安装在空调系统主送风管道中，其显热交换效率与自备风机是否运转及湿度无关。
The liquid level must be high enough to assure the gravity circulation of liquid. In the jet pipe, the flowing gas holds a turbulent state.
要求液面高度能保证净化液的自流，射流管内气体处于湍流状态，混合气流速度应达到连续射流所需的临界速度。
Based on the operational principle of on/off slip of continuous-circulation system, the forced state of drill pipe was clarified.
从钻井连续循环系统上卸扣卡瓦的工作机理入手，弄清了钻杆工作时的受力状态。
Based on the operational principle of on/off slip of continuous-circulation system, the forced state of drill pipe was clarified.
从钻井连续循环系统上卸扣卡瓦的工作机理入手，弄清了钻杆工作时的受力状态。
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