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问题: 英语翻译

easy to operate:
To measure surface resistance,place the meter onto the surface that requires testing press the red test button and hold.The LED that illuminates constantly is the surface resistance measurement.

解答:

操作很简单:
要想测量表面的阻力,要把仪表放在需要测试的表面上并按住红色的测试按钮。持续发光的那个LED指示灯(所标示的值)就是这个表面阻力的测量值。

注:LED是发光二极管的意思,但我记得在学物理时就叫LED指示灯