金属镁及其合金是工程应用中的超轻型的结构材料之一。

Magnesium and its alloy are the lightest structural material in engineering application by far.

youdao

金属镁及其合金是工程应用中的超轻型的结构材料之一。

Magnesium and its alloy are the lightest structural material in engineering application by far.

youdao