常見例句Analyzing the whole measuring process of the Ohm meter,an estimate formula for the resistance uncertainty is derived. 從分析歐姆表測量的全過程出發(fā)，導出了電阻測量不確定度的估計公式.Micro ohm meter has been used to measure the contact resistance commonly at present. 目前最常用的接觸電阻測試儀器是微歐儀，這些儀器普遍采用大電流恒流源，因此體積和重量都很大。Analyzing the whole measuring process of the Ohm meter, an estimate formula for the resistance uncertainty is derived. 當微安表改裝為歐姆表后 ,當電池電壓變化時 ,改裝表測量值會產生很大誤差。DVM is not accurate in measuring resistance below 20 ohm due to the lead resistance, unless it is a 4 wired ohm meter. 數(shù)字式電壓表在測量低于20歐姆的電阻時，會因為引腳的電阻而使測量不準確.;除非它是一個四線歐姆表DVM is not accurate in measuring resistance below 20 ohm due to the lead resistance, unless it is a4 wired ohm meter. 數(shù)字式電壓表在測量低于20歐姆的電阻時，會因為引腳的電阻而使測量不準確.;除非它是一個四線歐姆表When a microampere meter is changed to an Ohm meter valtage is changed and there will be big errors in the measuring value. 當微安表改裝為歐姆表后,當電池電壓變化時,改裝表測量值會產生很大誤差。 返回 ohm-meter