无保护层金属构造
unprotected metal construction
中心束管式缆芯和非金属快速接入型保护层室外光缆
cable core of central tube and non metal sheath of lightguide express entry’s outdoor optical fiber cable
惰气保护金属极电弧焊
inert gas metal arc welding
惰性气保护金属弧焊法
shielded inert gas metal arc welding
非金属-金属转化
nonmetal-metal transition
金属保护
metal line
metal protection
metallic protective layer
金属保护制剂
protective preparation for metal
金属－金属髋关节假体
Metal-on-metal hip prostheses