According to the application and can be divided into low back pressure type, back pressure type, in high back pressure type compressor.

按应用范围又可分为低背压式、中背压式、高背压式压缩机。

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Comparing with test data, the simulation model shows high precision, thus could be used to study the dynamic characteristic of high back pressure electricity-generating diesel engines.

通过与试验数据对比，该仿真模型具有较高的精度，可以用于研究高背压发电用柴油机在动态工况下的运行特性。

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If you have high blood pressure, cutting back on booze could produce a small but significant drop of 2 to 4 mm Hg systolic (the top number) and 1 to 2 mm Hg diastolic (the bottom number).

如果你有高血压，那么当你减少饮酒量时，可以使心脏收缩压有很小但又有意义的下降，可以下降2 - 4毫米汞柱(上面的数即分子数值)，以及心脏舒张压下降1 - 2毫米汞柱(下面的数即分母数值)。

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"People coming back, especially high performers, feel this pressure to walk back in the door and expect the same level of performance, " Ms. Fishman Cohen says.

WSJ: McKinsey Tries to Recruit Mothers Who Left the Fold

Jeff Talley, a former negotiator with the Los Angeles Police Department, is plunged back into precisely the kind of high-pressure situation that drove him out of the city in the first place, and which contributed to the breakdown of his marriage.

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Prices did back down from the daily high on some mild profit-taking pressure.

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