汽车的催化裂化器以及发电厂的过滤器降低了空气中的烟、雾、尘。
Catalytic converters on the cars and better filters on power-plant smoke-stacks have greatly reduced smog, smoke and soot in the air.
对于柴油机微粒排放的控制，目前普遍采用的是柴油机微粒过滤器(DPF)，通过这种方式能除掉绝大部分的碳烟微粒。
Diesel particulate Filter (DPF) is currently an effective and widely used approach to trap the particulate materials of diesel exhaust emissions.
根据国产车用柴油机的排气烟度现状，论证了采用排气微粒过滤器的必要性。
The necessity of introducing exhaust particulate trap in domestic automotive diesels was discussed on the basis of the present exhaust smoke situation.
根据国产车用柴油机的排气烟度现状，论证了采用排气微粒过滤器的必要性。
The necessity of introducing exhaust particulate trap in domestic automotive diesels was discussed on the basis of the present exhaust smoke situation.
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