基本解釋[琯理學(xué)]保護(hù)接地裝置英漢例句雙語例句It is necessary to use two—stage selective earthing protective device in the power supply system of open—pits.露天鑛供電系統(tǒng)中採用兩級選擇性接地保護(hù)裝置十分必要。protective earthing device更多例句詞組短語短語protective e earthing device 保護(hù)接地裝置protective earthing device更多詞組專業(yè)釋義琯理學(xué)保護(hù)接地裝置