下泄背压控制阀维持下泄流上游段或下泄热交换器处的压力，防止压力过低引起流体汽化。
The letdown back-pressure regulating valve maintains pressure in the section of letdown upstream or the letdown heat exchanger to prevent the letdown liquid flashing to steam.
但事实证明，这个椭圆形标记着一条长河的上游段，当他放大镜头后，他发现那些矩形是隐藏的构造。
But it turned out the oval marked the former course of a long-gone river, and when he zoomed in, he found the rectangles were buried structures.
最后对植物坝前上游段推移质泥沙的输移特性进行了研究，初步探明了植物“柔性坝”的固沙机理。
Lastly, studies transportation characteristic of bed load sediment of upstream end before vegetation dam. Preliminarily clear sand-binding mechanism of vegetation "flexible dam".
据推论最大可能性是在那一时间段非线性水压作用于坝体上游面所造成的差别。
It was theorized with a high degree of probability that the change in period was due to the nonlinearity of the hydrodynamic pressure acting on the upstream face of the dam.
1998年7月公布了一段20秒的视频，清楚地显示一只黑色的大型动物在荒原上游荡。
A 20-second video released in July 1998 clearly shows a large black animal roaming the moor.
过往的点滴在时间的年轮上游走，留下一段段泛黄的记忆。
Past drip in the time of the upper reaches of the ring, leaving a section of the pan yellow memory.
对上游进口段，特别是靠近叶片前缘区域流场参数分布有较大影响，但对于上游叶片表面马赫数影响不大。
The flow field parameter distribution can be affected more in upper stream, especially near the leading edge area while the Mach number distribution of the upstream blade surface is affected little.
射流反向倾斜入射，对上游流场的扰动增加，射流在弯曲段内曲率变化大。
When the jet is injected at negative injection angles, it disarranges the flow upstream and the curvature of jet trajectories varies smartly along the flow direction.
次流压比的增加将导致激波向扩张段上游移动，且喷管矢量角不断增加；
Along with the increase of the secondary flow pressure ratio, the shock move toward upstream divergent section and the thrust vector angle gradually increases;
我对照了伊拉克的地图，伊朗并不使用幼发拉底河的上游，而是在下游幼发拉底河的一段为两国之间国界。
By consulting the map of Iraq, I find that Iran doesn't locate in the upper reaches of the Euphrates, rather, one part of the downstream forms the dividing line between the two countries.
撤退时我有一半时间是步行的，后来还在塔利亚·门托河上游了一段，多亏他这膝盖。
I had done half the retreat on foot and swum part of the Tagliamento with his knee.
对刚好位于湄公河上游的维西与香格里拉之间的一段新修公路的调查揭示了严重的侵蚀问题。
A survey conducted along a new segment of the road between Weixi and Shangri-La just above the headwaters of the Mekong River revealed epic levels of erosion.
轧机的利润是受客户的行动，即使造纸厂是二阶段，上游从打印机谁是客户的新闻界制造商！
Mill profit is affected by customer actions even though the paper mill is 2 stages upstream from the printer who is a customer of the press manufacturer!
轧机的利润是受客户的行动，即使造纸厂是二阶段，上游从打印机谁是客户的新闻界制造商！
Mill profit is affected by customer actions even though the paper mill is 2 stages upstream from the printer who is a customer of the press manufacturer!
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