ฉันเชื่อมั่นว่าทุกคนรู้เกี่ยวกับ ฟ้าผ่า rods. When we were in junior high school, the textbook covered it in detail. In our daily life, we often see ฟ้าผ่า rods at the top of multi-storey buildings and have the effect of maintaining buildings, but many people have little knowledge of ฟ้าผ่า rods....
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