The Model 20 Volume Booster is a smaller pneumatic device capable of high flow and exhaustcapacity.
示范20卷，是一个较小的助推器气动装置的高流量和排气能力的能力。
2
The latest style large capacity muffle with special structure has reduced the noise of exhaust gas. A larger air filter is employed to reduce the noise of suction gas.
新型大容量和特殊内部构造消音器降低了排气噪音。采用较大的空气滤器减少了进气噪音。
3
The experiment results showed that, at elevant environmental temperature, the exhaust fan can reduce effectively the battery temperature and increase the battery capacity.