When power generation and power consumption system with same voltage class is built within the bound of ground grid with zero ground potential, operators safety in the ground grid can be ensured.
在零地电位接地网的范围内建设同级电压的发电-用电系统，可保证在该接地网内工作人员的人身安全。
There is voltage to ground between ground part of electric equipment and point of zero electric potential of earth.
电气设备的接地部分与大地零电位点之间存在对地电压。
When people wear this shoe, the human body and ground keep zero potential anytime and anywhere, thereby avoiding the static electricity from hurting human body.
当人们穿上这种鞋时，人 体和大地随时随地都保持零电位。从而避免了静电对人体的危害。
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