看看这些工厂排放到空气中的污染物。
Look at all the pollutants going into the air from those factories.
基于各种努力，与2000年相比，北京市空气中的硫化物含量减少了近一半，工业烟尘排放量则减少了三份之二。
Because of that and other changes, Beijing’s sulfur emissions have been cut almost in half compared with 2000, and industrial dust has decreased by two-thirds.
重点论述了电控发动机空气供给系统、燃油供给系统及电控系统常用传感器中存在的一些自诊断系统无法检测的故障对发动机排放物的影响。
The influence of the malfunction of the air supplying system, fuel supplying system and common sensors that can not be diagnosed by self-diagnosing system to engine emissions are analyzed especially.
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