全金属结构;
Magnesium and magnesium alloys are the most light in all of the metal construction materials, its density only contain 1.74/ cm~ 3, is an aluminum of 2/ 3, lighter than steel 78.1%.
镁及镁合金是所有金属结构材料中最轻的,其密度只有1.74/cm~3,是铝的2/3,比钢轻78.1%。
A study of the copper hollow cathode laser with all metal construction
全金属结构铜空心阴极激光器的研究
Of all metal construction are wing structures of modern high-speed airplanes.
现代 高速 飞机的机翼全是金属结构的.
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