earth: n.1.〔常E-〕 地球。2.大地，陆地，地面，地上。3.土壤，土。4.【化学】土类；泥。5.世界人类；人的躯体。6.尘世，人间，世间；世俗的事。7.〔英国〕(狐、獾等的)洞，穴。8.【电学】接地。9.【化学】难以还原的金属氧化物类〔如氧化铝、氧化钴等〕。短语和例子the whole earth 全人类。 be brought to earth 被击落在地上。 alkali
Example Sentences:
1.
Types and safety technical requirements of system earthing 系统按地的型式及安全技术要求
2.
The status of hvdc insulation monitoring was analysed . the method and problems of earth - fault detection for hvdc system were analysed as well . the operation principle and features of a new type hvdc insulation monitoring system were introduced . a scheme of hvdc system earth - fault detection was presented 分析了国内直流系统绝缘监测领域的现状，就现有的直流系统接地故障检测方法及存在的问题进行了分析；介绍了一种新型直流系统绝缘监测系统的工作原理及其特点，提出一种直流系统接地故障检测的方案。
