air booster是什么意思

用法例句

This paper introduces the characteristics of the pneumatic booster, the functions of the pneumatic booster in the gearshift of the heavy-duty car, and puts forward some problems needing attention in the use of the pneumatic booster.

论述了气动助力器的特性、气动助力装置在重型汽车变速箱换档机构中所起的作用,以及在应用时应该注意的问题。