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- safety earth ground 安全用接地线
- Most electrical outlets have a prong that connects to the earth ground, which is also usually wired into the building electrical system for safety. 绝大多数电源插座有一个地线端与大地相连，这通常是为保障建筑电气系统的安全而采取的安全措施。
- Connect your tuner and transmitter to a good earth ground. 把调谐器和发射机安置在一个好的地理位置。
- Do not apply more than 250V(AC or DC) between any input and earth ground. 任何被测试对象对地电压，包括直流和交流，不能超过250V。
- Safety earth connections must remain connected until the power system is ready to be energized. 安全接地必须在电力系统通电之前保持连接状态。
- Grounding: Each machine should have 1/4-20 earth ground stud on each side (left and right) of the machine. 接地线：每个设备应该在两端(左右)配备1/4-20的接地线。
- A referenced single-ended (RSE) measurement system, also called a grounded measurement system, is similar to a grounded signal source, in that the measurement is made with respect to earth ground. 单端基准点(RSE)的测量系统是相对于地线测量信号的，有时也称为接地测量系统。
- Earth Dam's Surface Task and Safety Earth Dam Quality Control 土坝的坝面作业与土坝质量控制的研究
- It seemed an eternity before news of his safety reached her. 他平安的消息到达她那里之前，那段时间似乎是无限漫长的。
- Thanks to I had tied then the safety belt. 幸亏我当时系上了安全带。
- The ship came about and headed back for safety. 这只船掉过头往回开到安全地带去。
- Analysis of Line Action Mistake Caused by Single-phase Earth Ground 单相接地引起线路误动作分析
- I don't wonder you were anxious about their safety. 你为他们的安全着急，我是不奇怪的。
- In the end they reached a place of safety. 他们终于到达了一个安全的地方。
- When do the new safety rules come into force? 新的安全规则何时生效?
- The safety precautions are totally inadequate. 这些安全措施完全不合格。
- I'm worried sick about my son's safety. 我十分担心我儿子的安全。
- If I lose my job, I've got no safety net. 我丢掉这份工作就无计可施了。
- We're all concerned for her safety. 我们都为她的安全担忧。
- The new aircraft is undergoing safety tests. 这种新飞机正在接受安全性能检验。
