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請教磁力.磁鐵專家.

磁鐵很多種..那如果隔著怎樣的材質.影響性會小?
每種磁..所受到的材質隔橫.表現犀利跟磁力都相同嗎?.

隔著多厚的橡膠..依然會有明顯的磁性影響.?

永磁鐵.能穿透多厚的樹膠材質?在多少範圍內.是不影響其功能?

找不到這種資料...請教專家..拜託了.

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