该中空型材(10)由轻金属组成。

The hollow material (10) is composed of a light metal.

与轻金属，镀锌钢材，碳钢有良好的附着力。

Good adhesion to light metal, galvanized steel and carbon steel.

轻金属覆层增加了车辆通过笨重路面时的机动性。

Light metal track layers increased trafficability through the heavy ground.

手镯环为中空环形结构，采用硬塑或轻金属，外表面镀（涂）金、银及装饰涂料。

The outer surface of the bracelet ring is coated by gold, silver and decorative coating. The connecting device can adopt a spring or a snap buckle sheet.