Because cars used to be heavy and braking systems were not as efficient as they now are, it was necessary to use the gears (or to be more precise, the engine compression) to help to slow the car down.

因为汽车比较重，刹车系统也不如今天的有效，以前的汽车必须利用变速箱(或更准确地说，引擎压缩)帮助汽车减速。

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The invention relates to a method for braking exhaust gas, which is implemented by the following steps: air compression and pre-dehydration are carried out;

本发明涉及一种废气制动的方法，是通过以下步骤实现的：进行空气 压缩和预脱水；

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