【简答题】一个容器内装有水,使水(K=2000MPa)的体积减小1%,压强需要增大多少? The volume of water in a container is reduced by 1%, so how much does the pressure need to increase?(K=2000MPa)
【判断题】气体在流道中经过突然缩小的断面(如管道上的针形阀、孔板等),产生强烈的涡流,使压力下降,这种现象称为节流。如果在节流过程中气体与外界没有热交换,就称为绝热节流。Gas in the flow channel through the sudden reduction of section (such as the needle valve on the pipe, orifice plate, et...