Trayed & Potted PC Board-Ensures long life in harsh conditions.

The pumping unit driven by a linear motor has been successfully used in field.

直线电机驱动抽油机已经成功在油田应用.

The design scheme and working principle of a broad-belt hydraulic pumping unit are presented.

提出了宽带液压抽油机设计方案,以及设计结构和工作原理.

This pumping unit provides for the advantages of high-carrying capacity, life and ease of manufacture.

这种工作机构为单一的 连杆机构,具有承载能力大 、 寿命长、制造容易的优点.

A down-hole autotracking well pumping unit different from the conventional pumping unit was designed.

针对抽油技术的现状和存在的问题,设计了一种不同于有杆抽油方法的井下自动跟踪式抽油装置.

The gear box of pumping unit's lubricating and leaks had seriously affected pumping unit's work.

抽油机减速箱的润滑和漏失问题已经严重影响了抽油机的正常运转,引起了人们的重视.

The pumping unit described in this article consists of a frame-mounted mechanical reversing drum.

齿轮式无游梁长冲程抽油机为机械换向台架式滚筒抽油机.

At present , the widely-used pumping unit is the surface drive device in the rod pumping system.

抽油机是有杆抽油系统的地面驱动设备.

The walking-beam pumping unit has not been fit for oil production in special wells defects.

游梁式抽油机—抽油泵装置已越来越不适应一些特殊油井开采的工艺要求.

Finally author advances a idea about the advantage and foreground of power saving pumping unit.

最后还提出了节能抽油机的优点以及应用前景.

This kind of pumping unit will promote energy-saving and production costs cut.

新型抽油机对油田的节能降耗,降低成本将起到推动作用.

A basic unit of currency in Greece.

德拉克马(现代希腊基本货币单位)

A basic unit of currency in Venezuela.

委内瑞拉基本的货币单位.

Silica is a basic unit in many ceramics.

硅是一种基本的陶瓷制品.

The basic unit of the storage is bit.

存储的基本单元是位.

A basic unit of currency in Afghanistan.

冰岛的基本货币单位.

The basic unit of a textile structure is fiber.

纺织品的最基本单元是纤维.

Stream system is a critical and basic unit of watershed management.

河溪系统是流域管理中最基本和最重要的单元.

Due to the brittle materials, masonry structure has a poor performance in earthquake.

砌体结构由于其材料的脆性性质, 抗震性能较差.

Masonry structure is a kind of age-old architecture structure and is widely used in buildings.

砌体结构是一种古老的建筑结构型式,在房屋建筑结构中应用广泛.

The simplified formulas used to calculate the masonry structure lateral rigidity and internal force are presented.

提出确定底层框架砖房抗震墙数量的简化方法,对砖墙侧移刚度及内力分析提出了简化的实用计算公式.