A thorough analysis is presented on the one point grounding problems existing in the silicon controlled excitation systems for the self-excited generators.

对自并励发电机可控硅励磁系统一点接地的问题进行了详细的分析，为判别接地提供参考。

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We are trying to make technical education the grounding from which we solve problems.

WSJ: Can U.S. Universities Stay on Top?

Battery problems have led to the grounding of the entire fleet of 787s.

BBC: Dreamliner: Boeing defends 787 batteries

According to a report in the New York Times, the two airlines operating the largest number of 787 Dreamliners, All Nippon Airways and Japan Airlines, had experienced battery problems before the two incidents that caused the grounding.

FORBES: With 787 Dreamliners Still Grounded And Few Leads On Battery Fires, Boeing Delivers A Good Q4