Analyzed the limitation of protective earth and necessity of leakage protection for electric power plant.
进行了电站保护接地的局限性和漏电保护的必要性分析。
The protective earth wire is mainly to reduce the strong electromagnetic interference generated by the breakdown of the sample.
接保护地线，主要是减少试样击穿时对周围产生的较强的电磁干扰。
The protective earth dike shall be earth-filled. no rock brick and concrete block or light and flammable material shall be allowed for filling.
防护土堤应用土填筑，不允许使用石块、砖块及混凝土块或者轻而可燃的材料填筑。
The low voltage circuit (even with low voltage on it) shall also be connected with protective earth, thus the dangerous voltage can be detected.
低电压电路（即使它们是低电压）必须和保护地连接，这样危险电压才能被检测出来。
Bus bar , zero line bar and protective earth bar adopt the self-designed insulation support, characterized by rational structure and better interchangeability;
母线排、零线排、保护接地排采用自行设计的绝缘支架安装，结构合理，互换性强。
The sheet steel for lighting distribution box is made into frameless shape, the main parts of which are shell, zero line bar, protective earth bar and panel etc.
照明配电箱用薄钢板做成无骨架形体，主要部件有壳体、零线排、保护接地排、面板等。
Because early Earth lacked oxygen in its atmosphere, it also lacked a protective ozone barrier.
因为早期的地球大气中缺乏氧气，所以也缺乏起保护作用的臭氧层屏障。
The Earth is protected from much of this radiation because it has an internal magnetic field that generates a protective magnetosphere.
地球因为有一个由内部磁场产生的保护磁层而免受大部分辐射的影响。
One reason for the rise in sunburn could be the hole in the ozone layer - the protective layer that shields the Earth from the sun's harmful ultraviolet rays.
晒伤增多的一个原因可能是臭氧层空洞，而臭氧层是保护地球不受太阳紫外线危害的保护层。
ROCKY planets a few times heavier than Earth that we thought might be life-friendly may lack one vital feature: a protective magnetic field.
比地球重几倍的岩石行星在我们看来也许是适合生命生存的，但它们可能少了最重要的一个特征：一个具有保护作用的磁场。
One thing you can't ever see is the invisible protective ozone layer around the Earth.
有一个东西你是无法看到的，那就是地球周围的臭氧保护层。
The solar wind constantly streams toward the Earth, but don't worry because a protective magnetic field surrounds our planet.
太阳风不断地流向地球，但是不必担心，因为有一个保护性的磁场包围着我们的地球。
The earth leakage protective device is mainly used to protect personal safety from leakage of electricity in the equipment.
漏电保护器主要是用来在设备发生漏电故障时以及对有致命危险的人身触电进行保护。
The earth fault protection and protective electric devices of TT and TN system and the application conditions were analyzed.
分析了TT和TN系统的接地故障保护和保护电器及其应用条件。
The protection of earth leakage is one of the main protective measures of underground mine's low voltage.
漏电保护是井下低压保护的主要措施之一。
One of the most disturbing aspects of the changes in Earth is the rate at which chemical pollutants produced by human activity are destroying the protective layer of ozone in Earth's upper atmosphere.
地球上的变化最令人烦扰的方面之一，是人类活动所产生的化学污染正在迅速破坏地球上部大气圈臭氧保护层。
In order to reduce the power cut off which caused by electric shock accident and earth-fault power cut off, it must install residual current operated protective device.
低压供用电系统中为了减少发生人身电击事故和接地故障切断电源时引起的停电，必须加装剩余电流动作保护装置。
Nobody was aware that going to the moon was creating dangerous holes in the protective shield around the earth.
没有谁知道，人类飞向月球，会把地球周围的保护层给戳些危险的窟窿。
Based on pot experiments, the effect of acid rain stress on membrane protective system of spinach and the conservation of rare earth elements were studied.
利用盆栽实验，探讨了酸雨胁迫下对菠菜膜保护酶系统的防护效应。
As a protective layer of the earth - the ozone layer also tore a large hole.
身为地球的保护层-臭氧层亦破了个大洞。
The Northern Lights, also known as aurora borealis, are created by the Sun's atmosphere, which blasts particles into the protective magnetic field surrounding the Earth.
北极光是世界上最著名也是最绚烂的太阳活动现象之一，想要亲眼见证北极光的美丽，人们通常需要去到最遥远的挪威。
The Northern Lights, also known as aurora borealis, are created by the Sun's atmosphere, which blasts particles into the protective magnetic field surrounding the Earth.
北极光是世界上最著名也是最绚烂的太阳活动现象之一，想要亲眼见证北极光的美丽，人们通常需要去到最遥远的挪威。
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