lần sau e cảm ơn chỉ cần like thôi nha, tránh làm loãng topic
https://diendan.hocmai.vn/threads/vat-li-7-chat-dan-dien-va-chat-cach-dien-dong-dien-trong-kim-loai.798352/#post-3939774
https://diendan.hocmai.vn/threads/vat-li-7-chat-dan-dien-va-chat-cach-dien-dong-dien-trong-kim-loai.798352/#post-3939774