The composition, major function, operating principle and design idea of SF6 environment monitoring system for high-tension switchhouse were introduced.
介绍了高压开关配电室SF 6环境监测系统的组成、主要功能、工作原理及设计思想。
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At a hastily arranged press conference at the White House after news of the switch leaked overnight, Obama said the aim was to protect against the threat of an Iranian missile attack.
Just imagine if changing the light in your room requires you to change the switch also. Would you care to purchase and set up such a system in your house?