The walls are cased with copper, and the watch-towers on the walls are roofed with brass.
城墙用铜包裹，城墙上的了望塔则以黄铜铸顶。
There was a glass partition through which we could watch the bright brass pistons.
船上有一个玻璃隔板，透过它我们能看到明亮的黄铜活塞。
Lead can improve the cutting performance; brass this easy cutting brass used as watch &clock parts.
铅能改善黄铜的切削性能﹔这种易切削黄铜常用作钟表零件。
Lead can improve the cutting performance; brass this easy cutting brass used as watch &clock parts.
铅能改善黄铜的切削性能﹔这种易切削黄铜常用作钟表零件。
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