The direct current system is an important component of the transformer substation, but its grounding is a common defect.

直流系统是变电站一个重要的组成部分，直流系统接地是常见的缺陷。

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The paper presented the method to detect the pollution degree of composite insulator surface by measuring its grounding current.

文章提出了通过测量绝缘子接地电流来检测复合绝缘子表面污秽程度的方法。

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Grounding and protection of electric equipment of oil field enterprise has been discussed, and its grounding and protection proposed also for oil traction, drilling and prospecting.

对电气设备的接地与保护问题进行了论述，并对采油、钻井、物探等作业环境中的电气设备问题提出建议。

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That led to its grounding in an area where water depth is 32 to 48 feet.

CNN: Shell: Grounded drilling rig sound and fit to be towed

Monday night, tug crews had to cut the rig loose during a storm that whipped up 24-foot waves, leading to its grounding.

CNN: STORY HIGHLIGHTS

Giving props to Jeremiah, Todd Defren also looked at the integration of earned, owned and paid, but clearly gives more credence to PR and its grounding in the earned media space.

FORBES: Converged Media Rising