它们被用来移动气体或液体的压力是从一个到另一个压力区。
They are used to move gas or liquid from one pressure are to another pressure area.
对垂直上升光管内临界压力区水的传热特性进行了试验研究。
A research on the heat transfer performance of water in vertical upward tube under near critical pressure is presented.
短期趋势显示将走强至周二，但压力区0.8680应该会保持不变。
The short cycles say final strength should be seen into Tuesday, but the resistance at. 8680 is expected to remain intact.
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