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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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A basic unit of currency in Greece.

德拉克马(现代希腊基本货币单位)

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A basic unit of currency in Venezuela.

委内瑞拉基本的货币单位.

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Silica is a basic unit in many ceramics.

硅是一种基本的陶瓷制品.

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The basic unit of the storage is bit.

存储的基本单元是位.

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A basic unit of currency in Afghanistan.

冰岛的基本货币单位.

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The basic unit of a textile structure is fiber.

纺织品的最基本单元是纤维.

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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.

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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.

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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.

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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.

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