One approach has been to use variable-lift inlet valves that can be raised or lowered to different heights, depending on the amount of power needed.
一种途径通过所需的能量总数来使用可变化升降的入口阀门，它能以不同的高度升降。
A Robust design approach and integrated test procedure of the aircraft variable geometry inlet control system are discussed.
论述了飞机进气道可变几何形状控制系统的鲁棒设计方法和系统的综合试验。
Theoretical and experimental results suggest that the engine performance at low load can be improved with the variable swirl twin inlet port.
理论计算与试验结果证明，采用双进气道可控进气涡流系统是改善大功率柴油机低负荷性能的一个有效途径。
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