引用 张静茹:"the ceramic isolators on each end (cylindrical pieces about an inch wide) tend to be made up of Barium Oxide, which is very toxic."
那不是块陶瓷吗?
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
引用 张静茹:"the ceramic isolators on each end (cylindrical pieces about an inch wide) tend to be made up of Barium Oxide, which is very toxic."
那不是块陶瓷吗?