The most important safety valve as far as food supply is concerned is the short production cycle.
就粮食供应来说最重要的安全阀是短生产周期。
Four-stroke engines of this type with this same type of intake valve motion but with a supercharger to make up for the loss of power density are known as Miller cycle engines.
四冲程发动机本与此同进气阀运动类型的类型，但以使增压器的功率损耗密度，这些都是为米勒循环发动机众所周知的。
Pump and valve itself can be installed to reduce the cycle circuit pressure to improve their performance.
而且泵本身安装阀可降低回路的循环压力，提高其工作性能。
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