Were transient measurements made at the site or during storms 在正常天气或雷暴期间，是否对现场进行过电涌的测量？
2.
This paper mainly introduces the recent development of transient measurement techniques in exhaust emissions from engines oversea and domestic ， emphasises on experimental equipment and methods 本文对近来国内外在发动机动态排放测试技术方面的发展进行了介绍，着重从实验设备和实验方法上对各个系统进行阐述。
3.
Abstract : this paper mainly introduces the recent development of transient measurement techniques in exhaust emissions from engines oversea and domestic ， emphasises on experimental equipment and methods 文摘:本文对近来国内外在发动机动态排放测试技术方面的发展进行了介绍，着重从实验设备和实验方法上对各个系统进行阐述。
