The protection for earth fault line selection and fault point location by S injecting current in neutral isolated power system is presented.

介绍了基于“S注入法”的小电流接地系统单相接地故障选线定位保护。

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When ambient temperature falls below the thermal neutral zone, isolated young cannot maintain high constant body temperatures.

当环境温度低于热中性区时，单独的个体不能维持较高的恒定体温。

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Therefore, deepening the knowledge of isolated neutral system is very important.

因此，对中性点不接地系统加深认识十分重要。

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What is useful about neutrons for these experiments is that they are electrically neutral - within the experiment, they are as isolated from all the forces of nature as they can possibly be, with only gravity to act on them.

BBC: Neutrons could test Newton's gravity and string theory