Alternating current reverses from negative to positive about 60 times a second 交流電由負(fù)到正一秒鐘大約變換六十次。
Current reversing key 電流換向開(kāi)關(guān)
However , at turn - off , the diode current reverse for a reverse recovery time trr before falling to zero 然而在關(guān)斷時(shí),二極管的電流在降至零之前有一個(gè)反向恢復(fù)時(shí)間。
A type of micro - ohmmeter based on the technique of current reversed 4 - line impedance measurement is designed , which can be testified to meet the requirement and have a good repeated accuracy 摘要設(shè)計(jì)一種基于四線制電流倒向技術(shù)的微弱電阻測(cè)量?jī)x,經(jīng)實(shí)驗(yàn)驗(yàn)證,該測(cè)量?jī)x可以很好地滿足測(cè)量要求,并具有良好的重復(fù)測(cè)量精度。
Industrial ct machine can get the entire data of one part without damaging it and save the data in bit images . it is the focus point of current reverse engineering that how to re - manufacture the part from the industrial ct slice images 工業(yè)ct機(jī)能無(wú)損地獲取零件完整的信息,它輸出的數(shù)據(jù)是以位圖圖像的形式保存的。如何由工業(yè)ct切片圖像將零件原型重新制造出來(lái)是目前逆向工程領(lǐng)域研究的熱點(diǎn)。