preadmission是什么意思

用法例句

Different valve-timing schemes under four running conditions were evaluated;inducted air and scavenged air were quantified and the amount of inlet backflow and trapped air in cylinder was analyzed at different inlet advanced angle.

以1台柴油机为例介绍了1种利用计算流体力学(CFD)数值分析来研究配气正时的方法,并计算了4种工况下不同进气提前角时缸内的充气量和扫气量,分析了进气倒流和缸内工质质量随进气提前角的变化规律。