Three types of backpressure valves are diaphragm, spring and weighted lever.

有三种类型的回压阀，即隔膜式、弹簧式和负荷杆式。

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This test pressure includes corrections for service conditions e. g. backpressure or high temperatures.

此试验压力包括工作条件如：背压和高温的校正值。

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If you need to raise backpressure, the preferred solution is to add more screens and increase screw speed.

如果你需要升高背压，较好的方案是添加更多的滤网并增加螺杆速度。

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HCD-14 Genesis exhaust is ceramic-lined and was tuned for minimal backpressure, maximum high-rpm horsepower, and a deep baritone note, with cooling fins integrated into ultra-wide exhaust tips.

ENGADGET: Hyundai unveils HCD-14 Genesis concept: suicide doors, gesture and eye controls