It refers to install the three way catalytic converter at the automobile exhaust pipe, and rapidly transform the harmful ingredients into innoxious substance.
机外净化是指在汽车排气管上安装三效催化转化器，使尾气中的有害成分迅速转化为无害物质。
With regulations on vehicle exhausts become increasingly strict, development and application of the three-way catalytic converter has become the fundamental approach to control vehicle emissions.
随着汽车排放法规的日益严格，三元催化转化器的开发和应用已经成为控制汽车排放污染物的根本途径。
Auto three-way catalytic converter is one of the key auto parts.
汽车三元催化转化器是汽车关键零部件之一。
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