短語(yǔ)詞組短語(yǔ)magnetic pipe powder core 磁性鐵粉心FeSiAl magnetic powder core 鐵硅鋁磁粉芯soft magnetic powder core 軟磁粉芯fe -si-al magnetic powder core 鐵硅鋁粉芯powder magnetic core 圧粉磁心 返回 magnetic powder core