1. It would be a return, in a way, to a time when older steam engines once worked in the fields.
从某种程度上说，人们可能会回到旧蒸汽机工作在田野上的时代。
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2. This steam is then collected for use in other heat exchangers or discharged to the condensate return line.
这部分蒸汽会用于其他热交换器或者排放到凝结水回水管线中。
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3. When the system pressure drops to the return pressure, the security valve will be closed and stop discharging, in the way of which the pipelines and equipments of the steam system will be protected.
4. The two operational modes were analyzed by the model controlled the steam inlet valve and the drain water valve based on the return water temperature.
5. The trap remains closed until the steam cools and condenses into water. The bellows retracts to allow the water into the return piping.
疏水阀处于关闭状态，直到蒸汽足够冷却到凝结为凝结水。这时膜盒重新回缩并让水流进回路管道。
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6. The plate falling film evaporator has advantages of high capacity, less steam consumption and high return water ratio but is not suitable for evaporation of solution with crystal liberation.
7. The advantages of forced circulation and indirect heating are lowered steam costs through return of condensate to boilers, lower liquor volumes, and greater uniformity of cooking.
强制循环和直接加热的方式的优点是通过回用冷水使耗汽量，耗水量降低、并使蒸煮更加均匀。
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8. SED recovery column reboiler temperature flow cascade control for steam condensate return.
抽提回收塔底蒸汽凝液温度流量串级控制。
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9. That could take some of the steam out of China's nascent recovery, and with it a return in healthy demand for oil.
10. First: to act as an automatic non-return valve by preventing a backflow of steam from the main steam header to the boiler.
首先，能过作为一个自动逆止阀，防止蒸汽从主蒸汽加热器上倒流到锅炉里。
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11. The bottom of the water tank is connected with a water return pipe which is provided with a water return valve and is communicated with the steam pipe.
水箱底部连接有回水管，回水管上装有回水阀并且和蒸汽管连通。
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12. Now that she and Bill have left the building, the question remains:Does she have any plans to return under her own steam?
现在她和比尔已离开了白宫，但问题依然存在：她还打算以她自己的实力回来吗？
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13. Now that she and Bill have left the building, the question remains:Does she have any plans to return under her own steam?
