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backpressure
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【化】 反压; 反压力
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详细解释：
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以下为句子列表：
英文: A Reduced Pressure Zone Assembly shall be installed at each potential health hazard location to prevent backsiphonage and/or backpressure backflow.
中文: 在每个具有潜在健康危害，需要防止反虹吸和/或反压力回流的地方应该安装一个减压区总成。
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英文: For trouble-free longevity, it is also equipped with a ball check valve which is a third-check member, its main function being to prevent backpressure on each pump cycle from unnecessarily acting directly on the check members.
中文: 为了保证长期无故障使用寿命，这种装置还配置球型止回阀作为第三个止回阀元件，它的主要功能在于防止每个泵循环产生的反压力不必要直接作用在止回阀元件上。
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英文: Pigging in pipe before inspection, pipe pigging under low throughput intermittent operation; get rid of congealable oil, wax precipitation and incrustation in pipe to reduce backpressure and friction, and lower temperature.
中文: 管线内检测前清管、低输量间歇运行输油管线清管；清除管线内部的凝油、结蜡、结垢，达到减小输油回压、减小磨阻、降低输油温度的目的。
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英文: The turbine backpressure is measured by the pressure transmitters IND25.GCW.00 PT400 on the main steam duct.
中文: 汽机背压由主蒸汽管道上的压力变送器IND25.GCW.00PT400测量。
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英文: Therefore, if both check valves foul, and simultaneous negative supply and positive backpressure develops, the relief valve uses the air-in/water-out principle to stop potential backflow.
中文: 因此，如果两个止回阀都受到污染，并且同时出现负供应压力和正反压力，则这种安全阀就利用气进/水出原理来阻止潜在的回流。
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