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電壓表怎樣讀數

2020-04-24

正確讀取電壓表讀數的方法:(兩“看清”,一“穩定”)

1. 首先明確電壓表的量程,即看清接線柱上標的量程數值;

2. 確定電壓表的分度值,即看清每小格電壓值以及每大格電壓值;

3. 待電壓穩定后再讀數,即電壓表的指針指示穩定后再讀數。


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