说明高压薄膜式气动量仪的工作原理。
参考答案：经过气源处理的压力为0.35MPa的气流进入主喷嘴，分别流入量仪的上、下气室。进入下气室的压缩空气经测量喷嘴与工件间的间隙S流入大气；进入上气室的压缩空气，则经锥杆与锥阀的间隙流入大气。当膜片两侧的压力相等时，膜片处于平衡状态。当间隙S改变时，膜片两侧的压力不再相等，使膜片凸、凹变形，达到新的平衡位置，并由指示表指示工件尺寸的变化。
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| As a student, is studying subjects your only task (任务) at school? You may not realize it, but you are doing 1 than just studying when you are at school. School is also the place 2 you leam to get along well with people. But this is not always easy. What can you do if you just don't like one of your classmates? If you find that you have problems 3 along with your classmates or friends, the most important thing to learn is tolerance (宽容). Tolerance is the ability 4 and respect (尊敬) the differences in others. We can't change the way that other people do, so it is imprtant 5 to live happily with them. Tolerance will make everyone get on 6 with each other. Getting to know others may help you understand why they do things differently. 7 does not exactly mean that it is bad. Tolerance teaches us to keep calm and have and open mind. There is an old saying, "Treat (对待) others how you want to be treated. " You would like 8 kindly by your classmates, so it is important to treat them kindly, too. Having tolerance doesn't mean that you have to like it. 9 is asking you to change who you are or what you believe in. It just means that you should respect the differences in others and not try to make them change. Practice tolerance, it will make everyone's life 10 . | |||
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