Salt water corroded the light alloy frames and the fabric wing-covering . 盐水对轻合金飞机构架和布质机翼蒙皮有腐蚀作用。
It is not possible to make this light alloy by melting the small part of copper and then adding the much larger part of aluminium . 在炼这种轻质合金时,就不能先熔小部分的铜,再加进大部分铝。
Hexagonal hollow screw - plugs for use on light alloys 轻合金用六角头空心螺纹塞
Road vehicles - light alloy wheels - impact test 道路车辆.轻合金轮.碰撞试验