连接燃油脉冲器的排放管路(若配备)。

Connect vent line at fuel damper (if equipped).

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如果排放管路中只允许存在废水，堵塞情况不会发生。

If you permit only the waste water in the drains, this type of blockage will not occur.

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在汽车排放模态测试中，采样管路的延迟时间是影响测试结果的重要因素。

In vehicle emission modal test, sample line delay is an important element that can affect the test result very much.

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