測(cè)量電池是由絕緣的銀陰極組成的.The measuring cell consists of an insulated silver cathode.旋轉(zhuǎn)滑環(huán)是用片狀塑料襯套與軸絕緣的.The rotating slipring is insulated from the shaft by a laminated plastic bushing.我們的電動(dòng)工具都是雙重絕緣的,并符合國際安全標(biāo)準(zhǔn).Our electrical tools ...