The main reason for this type of grounding is safety, and not because it is used as a reference potential.

这样做的主要原因是为了安全而不是因为大地是潜在的参照物。

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Reference ground, sometimes called a return path or signal common, is usually the reference potential of interest.

参考地，通常是指潜在的参考端，有时被称为回路或公用信号。

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The shield conductor of a shielded cable should be connected to the reference potential at the signal-reference node (Figure 4).

电缆的屏蔽层必须单点连接到参考电位，连接点应尽量靠近信号源的参考电位。

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Today, it can just as easily reference hundreds of peers, potential crushes or even random strangers.

CNN: Why parents should educate their kids about tech

The study identified twelve institutions as potential Centres of Excellence and nine as potential Centres of Reference.

UNESCO: Communication and Information

Comcast isn't opening up its set-top boxes (UI and all) in the way we'd like, but it has established a reference spec (RDK) for potential hardware partners to build their own versions of its next generation setup.

ENGADGET: Humax's take on an IP-connected TV box for Comcast passes through the FCC