工学 用电安全技术 释 protective earthing 保护接地 将电气设备的某些部分用导线（接地线）与埋设在土壤中或水中的金属导体（接地体）相连接的做法。又称安全接地。
计算机硬件 计算机工程设计 释文 protective earthing 保护接地
- exit and entry documents
- exit and entry of Chinese citizens
- E-xi Tang Diao(western Hubei folk ensemble music)
- exit boundary
- exit boundary point
- exit channel
- exit channel; outgoing channel
- exit cone
- exit-entry animal quarantine
- exiternality of technology
- exitine
- Exit interviews
- exit mechanism in publishing industry
- exit passageway
- exit pupil
- exit-pupil
- exit regulation
- exit time
- exit wave reconstruction
- exit window
- exmedian
- exmedian point
- exmeridian altitude
- exmeridian observation
- ex-nova