以下为句子列表：
英文: Huakai Valve Manufacture Co., Ltd.(the former “sheyang High-Medium Pressure Valve Factory”)(hereinafter called” HKV”),one of the members of jiangsu valve Group, was established in 1974,wich owns 20 years' experiences on high-medium pressure valves' design
中文: 华凯阀业制造有限公司（原射阳县高中压阀门厂）创建于1974年，为江苏阀门集团成员企业，具有二十多年设计、制造高中压阀门的丰富经验及完善的质保和用户服务体系，并在行业内率先取得ISO9002质量体系认证。
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英文: It is made up of filter relief-pressure valve and oil sprayer,thus reducing the transverse installation space.It can not only provide clean,dry and stable air source for pneumatic system but also provide good lubrication for pneumatic elements in the pneu
中文: 由过滤减压阀和油雾器组合而成，减小了横向安装空间，能为气动系统提供清洁、干燥、稳定的气源，又能为气体系统中的气动元件提供良好的润滑作用。
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英文: The paper introduced the welding repair process for the sealing surface of high-pressure valve board. It greatly improved the inlet high-pressure valves service life and obtained better economy benefits.
中文: 介绍了高压阀阀板密封面焊接修复的过程，经实际使用证明，该工艺方法行之有效，提高了进口高压阀的使用寿命，取得了较好的经济效益。
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英文: There shall be semi-auto change over system in the gas yard and main pressure valve and relief valves should be located outside the lab building.
中文: 安装半自动转换阀控制气瓶更换，主要的控制阀门和减压阀门都安装在实验室外。
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