【化学】金属联合体，氨基羧酸

metal straddling dowel

earth engenders metal

heavy non-ferrous metal alloy【材】

shielded inert-gas metal arc welding

borides, carbides, nitrides, oxides, silicides as hard metal of more than 50% by weight

metal ultrahigh vaccum argon analyzer

elongate material of metal coiling

spark discharge generation of shock waves, metal shaping B 21 D 26/12 运输