常見例句雙語例句NOTE This provision includes a protective earthing conductor in the supply cord.注：此防護(hù)措施包括電源線中的保護(hù)性導(dǎo)線。This paper analyses the principle and functions of protective earthing and hanging earthing conductor , and analyses the existing problems in practice.分析了保護(hù)接地和掛接地線的工作原理、作用以及使用過程中存在的問題，值得工鑛企業(yè)安全用電借鋻。 返回 protective earth conductor