Study of the Pressure Character for Jet Pipe Valves;
结合高炉控制，介绍了液压射流管控制技术。
Open the relevant valves on the oil pipe line and the water pipe line.
打开油管管路和水管管路上有关的阀门。
Close the relevant valves on the oil pipe line and the water pipe line.
关闭相关的油管管路和水管管路上的阀门。
Valves are technically pipe fittings, but are usually discussed as a separate category.
排气阀在技术上管件，但通常是作为一个单独的讨论范畴。
Swing Check valves prevent reversal of flow through pipe lines.
旋启式止回阀可以防止管路中的流体倒流。
Swing Check valves prevent reversal of flow through pipe lines.
旋启式止回阀可以防止管路中的流体倒流。
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