If the exhaust system is under a vacuum, the casing must be warmed by gradually introducing the steam, after opening the exhaust valve.
如果排气系统处于真空下，必须在打开排气阀后，逐渐引蒸汽来加热壳体。
A forcible stream of air, gas, or steam from an opening, especially one in a blast furnace to aid combustion.
吹风，送风从出口，尤其是从助燃鼓风炉的出口出来的空气，其他气体或蒸汽气流。
The steam turbine drivers are warmed by slowly opening the exhaust valves.
汽轮机驱动器通过缓慢打开排气阀加热。
Inverted bucket steam trap opening and closing action is based on the difference in density of the condensate and steam to its accurate and reliable.
倒吊桶式蒸汽疏水阀的开启和关闭是根据凝结水和蒸汽的密度差来动作的，其动作准确，可靠。
A forcible stream of air, gas, or steam from an opening, especially one in a blast furnace to aid combustion.
吹风，送风：从出口，尤其是从助燃鼓风炉的出口出来的空气，其他气体或蒸汽气流。
Actuator can adjust the opening size of each steam valve by responding to the electro-instruction sent from DEH.
执行机构响应从DEH送来的电指令信号，以调节汽轮机各蒸汽阀开度。
The opening sounds are to imitate the noise of a great steam engine of the middle twentieth century starting its run.
乐曲一开始维妙维肖地模仿了二十世纪早期蒸汽机车开始运行的噪声。
It can economize oil nitrogen gas as well as make full use of recovery steam to use steam to bake the fire in the converter cover opening.
转炉氧枪口采用蒸汽封火，既节约有油氮气，又利用回收蒸汽。
A forced-closing-and-opening plunger pump is developed to solve the problems of gas lock and sand inflow and low pump efficiency in steam injection Wells.
针对辽河油田蒸汽吞吐油井存在气锁、出砂、后期油稠泵效降低的状况，研制了强启闭柱塞抽油泵。
The interior of the inverted bucket steam trap is BS inverted bucket, a liquid level sensitive part, with the bucket's opening downward.
倒吊桶式疏水阀内部是一个倒吊桶为液位敏感件，吊桶开口向下。
The interior of the inverted bucket steam trap is an inverted bucket, a liquid level sensitive part, with the bucket's opening downward.
倒吊桶式疏水阀内部是一个倒吊桶为液位敏感件，吊桶开口向下。
The interior of the inverted bucket steam trap is an inverted bucket, a liquid level sensitive part, with the bucket's opening downward.
倒吊桶式疏水阀内部是一个倒吊桶为液位敏感件，吊桶开口向下。
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