The timer then opens the lower valve for a fixed period of time, permitting the - plastic powder to discharge from the intermediate chamber.
定时装置随后开启下面的夹管阀并持续一段固定的时间，让塑料粉末从中间罐腔中排出。
The aim of the test is to find out your overall English language level e. g. Lower Intermediate, Intermediate etc.
该考试的目标是找出你们的总体英语语言处于何种水平，如：中下等、中等及其它等等。
The aim of the test is to find out your overall English language level e. g. Lower Intermediate, Intermediate etc.
该考试的目标是找出你们的总体英语语言处于何种水平，如：中下等、中等及其它等等。
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