以下为句子列表：
英文: After retrofitting the digital electro-hydraulic (DEH) Control System of the steam turbine unit no. 1 in Dezhou Power Plant, the valve stem leakage has occurred on the highpressure main steam valve, and the causes leading to the said leakage being analyse
中文: 摘要对德州电厂1号汽轮机组在经过DEH控制系统改造后高压主汽门杆发生蒸汽泄漏的原因进行了分析，认为蒸汽泄漏是热态时阀门开度不足所致。
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英文: CAUTION: Care must be taken not to rotate the valve stem or change the handwheel/indicator setting while setting the memory.
中文: 警告：必须要小心谨慎，不要在设置记忆时，旋转阀杆或改变手轮/指示器设置。
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英文: Carefully remove the handwheel. Slight tapping with a mallet may be required, but do not change the valve stem position.
中文: 小心拆卸手轮。如果需要，用木槌轻轻敲打，但是不要改变阀杆位置。
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英文: Clean exposed portion of valve stem (Do not scratch).
中文: 清洗阀杆的外露部分（不要划伤）。
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英文: Gate valves are normally installed in horizontal pipe runs with the valve stem vertically up.
中文: 闸阀通常安装在水平管道上，其阀杆垂直向上。
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