着重论述了在制药企业中真空泵运转过程中排气管发生爆鸣现象的安全技术控制措施。
The safety technical measures against explosion whistle happened on exhaust pipes during the running of vacuum pumps in pharmaceutical enterprises are discussest.
文中对柴油机脉冲增压系排气管中排气脉冲的形成过程作了简单明确的说明。
A succinct explanation on the process of the formation of exhaust impulse in exhaust pipe of a diesel engine with pulse system is made.
在金华，即使污染不那么严重的日子，城市的天际线也都消失在烟尘之中，越来越多的大气污染物是从机动车排气管中排出的。
On all but the best days in Jinhua, for example, the city skyline disappears behind a dense haze of smog and particulates; more and more of that atmospheric soup is pouring out of tailpipes.
在金华，即使污染不那么严重的日子，城市的天际线也都消失在烟尘之中，越来越多的大气污染物是从机动车排气管中排出的。
On all but the best days in Jinhua, for example, the city skyline disappears behind a dense haze of smog and particulates; more and more of that atmospheric soup is pouring out of tailpipes.
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