In this paper, the compositions, working principles and its advantages and shortcomings of automatic control system for a single-well pumping installation are presented.
本文介绍单井自动控制抽油装置的组成、工作原理及其优缺点。
Use of concrete pumping construction, pipeline installation to be straight and flat pad.
砼采用泵送施工，管道安装要顺直，并垫平。
In order to improve the counterbalance effect of pumping units, this paper represents a method of installation with forward offset counterweight.
为了改善抽油机的平衡调节，本文提出了平衡重前置的安装方式。
The structure compositions of a new type of hydraulic driving pumping oil installation and the working principle of its hydraulic driving system are introduced.
介绍了新型液力抽油装置的组成及液压驱动系统的工作原理，该装置综合了液压有杆抽油装置和水力活塞泵抽油装置两方面的优点。
It is an important task to increase efficiency of systems and installation freedom between wind turbine and water pump and reduce maintenance for wind pumping systems.
提高小型提水风力机的效率，减少系统的维护量，增加风力机安装位置与水泵安装位置之间的自由度是推广利用风能提水的一项重要工作。
The actual pumping has been sub-contracted, and once the installation is complete the operator will be responsible for both the operation and maintenance of the facade for ten years.
实际抽水已分段承包，一旦安装完成后，经营者必须既负责操作和维修的幌子，为十年。
The actual pumping has been sub-contracted, and once the installation is complete the operator will be responsible for both the operation and maintenance of the facade for ten years.
实际抽水已分段承包，一旦安装完成后，经营者必须既负责操作和维修的幌子，为十年。
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