题目内容
将被测试件的变形转换成变换量的元件，称为电阻应变片。
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可以使用应变式电阻传感器测量。
压电晶体表面所产生的电荷密度与。
压电元件受力的方向与产生电荷的极性。
Whatever pressures there can be or inferences one can make, people become what they do, though it may not be in compliance(符合) with their true desires. Therefore, we should all bear in mind Kurt Vonnegut’s advice: “We are what we pretend to be, so we must be careful about what we pretend to be.”What does the author mainly discuss in the passage?
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