It may or may not be connected to earth ground.
实际上它可能连接也可能未连接到底。
In general, only one point in the measurement system should be connected to earth ground to avoid ground loops.
一般而言，在测量系统中应该只有一个点被连接到接地，以避免形成接地回路。
The earth wire of the UPS must then be connected to an efficient earth system.
UPS的地线必须与有效的接地系统连接。
Grounding wire must be reliably connected to the earth, or else the operator may be an electric shock hazard.
接地线必须可靠接于大地，否则操作人员可能有触电危险。
Power equipments are connected to earth to ensure the safely of equipments and engineers. Mirror image method can be a effective to calculate the earth resistance and step voltage.
将电力设备的某些部分接地，是为了设备与操作人员的安全，本文应用镜像法对此进行了一些具体的分析计算。
The other aim is also to always be connected and in communion with Mother Earth, while trying to remember your true nature, your real self so to speak.
另一个目标是经常与地球母亲密切相互交流，尽可能记起你的真实本质和真正自我。
In fact, you can bet that no two sources that are connected to the earth ground are at the same reference level; the difference between them could easily be up to 10 volts.
事实上，你可以试验一下，两个拥有相同参照物而非同时接地的电源，它们之间的电压差异很可能只有10v左右。
In fact, you can bet that no two sources that are connected to the earth ground are at the same reference level; the difference between them could easily be up to 10 volts.
事实上，你可以试验一下，两个拥有相同参照物而非同时接地的电源，它们之间的电压差异很可能只有10v左右。
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