激情综合色综合啪啪五月丁香搜索_小13箩利洗澡无码视频网站_ipx327新婚被公持续侵犯_啊灬啊灬啊灬快灬毛片视频

FDY-II礦(kuang)(kuang)用(yong)雜散電(dian)(dian)(dian)流(liu)測(ce)試儀(yi)適宜測(ce)試煤(mei)礦(kuang)(kuang)井下鋼軌、水管(guan)、電(dian)(dian)(dian)纜等產(chan)生(sheng)的電(dian)(dian)(dian)流(liu)及(ji)電(dian)(dian)(dian)壓，預防雜散電(dian)(dian)(dian)流(liu)放電(dian)(dian)(dian)引起的電(dian)(dian)(dian)雷，

礦用雜散(san)電(dian)流測定儀/雜散(san)測試儀特(te)點是：測量(liang)(liang)范圍廣，共(gong)有二十個量(liang)(liang)程，能分別測量(liang)(liang)交直流雜散(san)電(dian)壓和雜散(san)電(dian)流，不需(xu)要(yao)電(dian)源，安全可靠。

雜散電流測試儀廠家(jia)|礦用(yong)測定(ding)儀將轉(zhuan)換開(kai)關置于適當檔，則表頭(tou)指(zhi)示值(zhi),經(jing)換算得到相應(ying)的電流值(zhi)。礦用(yong)雜散電流測試儀測量時，測量探針(zhen)的硬(ying)質合金(jin)與被(bei)測物接觸良好，儀表應(ying)水(shui)平放(fang)置，以(yi)保(bao)證讀(du)數準(zhun)確。