Introduce and discharge the principle, structure and characteristic of the lightning rod ahead of time.
介绍了提前放电避雷针的原理、构造及其特点。
The invention includes several discharge space located between the double block wall structure.
本发明另包括多个放电空间位于双挡墙结构间。
The invention includes several discharge space located between the double block wall structure.
本发明另包括多个放电空间位于双挡墙结构间。
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