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.
大管径管路会帮助气压延迟传递到模腔，并由此可能会导致在零件上留下延迟印记。
Larger diameter hoses can help to increase gas pressure delay to the cavity and may result in hesitation marks on the part.
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