该阀不受蒸汽压力、温度变化的影响，具有良好的工作特性。
The changes of steam pressure and temperature canont influence the trap. It sas good working characteristic.
VD精炼炉的真空抽气泵工作时蒸汽压力稳定而流量具有周期性，间断使用。
The pressure of the steam used in the vacuum pump of VD refining furnace is stable, but its flow is periodic.
VD精炼炉的真空抽气泵工作时蒸汽压力稳定而流量具有周期性，间断使用。
The pressure of the steam used in the vacuum pump of VD refining furnace is stable, but its flow is periodic.
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