非金属-金属转化
nonmetal-metal transition
金属-金属髋关节假体
Metal-on-metal hip prostheses
2RE69/Zr702合金双金属管
urea grade tube(2RE69+Zr702
暗设金属管道
dark placing metal pipeline
半金属管封装
half metal tube packaging
瓷外套金属氧化物避雷器
Porcelain-clad Metal Oxide Lightning Arrester
胆管金属支架
Bile ducts stents and prostheses