补气管 meaning in Chinese

aeration pipe
vent

This paper investigates the structural parameters of air inlet pipe , air compensating pipe and air compensating valve which influence the air compensation of air compensating valve for motorcycle catalytic converter , the position of air compensating hole , and the relationship of air compensating pressure with engine speed
本文就影响摩托车催化转化器补气阀补气量的进气管、补气管、补气阀的结构参数，以及补气孔的位置、补气压力随转速的变化关系等进行了探讨。