您要查找的是不是：
- Many natural materials are becoming scarce. 许多天然原料越来越少。
- Brass is an alloy of copper and zinc. 黄铜是铜和锌的合金。
- Brass is formed by the fusion of copper and zinc. 黄铜是由铜和锌熔合制成的。
- The beautiful curtain is made of remnant materials. 这个漂亮的窗帘是用零头布做的。
- Some synthetic materials do not crush easily. 有些化纤衣料不易起皱。
- An alloy composed of lead, tin, and zinc. 铅锡锌化合物由铅、锡和锌组成的一种合金
- Everything we used was made from natural materials. 我们所用的一切都是由天然材料做成的。
- He buys the materials wholesale. 他成批地购买原材料。
- He is collecting materials for a book. 他正在为写书搜集素材。
- Building materials are expensive. 建筑材料很昂贵。
- You should first put a small piece of zinc plate into the cup. 首先，要向杯子里放一小片锌板。
- A bin for storing ore, grain, or other materials. 仓库储放矿石、谷物或其它材料的大箱
- The fusion of copper and zinc makes the metal brass. 铜和锌的熔化制成黄铜。
- He is gathering materials for a new book. 他正在收集资料准备写一本新书。
- Environmentalists are keen on degradable materials. 环保分子特别喜爱能够自然分解的材料。
- Recycled materials are mostly of limited use. 再生材料大多用途有限。
- All the raw materials are imported. 所有原料都是进口的。
- An alloy of zinc and copper used as imitation gold. 铜锌合金作为仿金品使用的铜锌合金
- Stockings made of one of these synthetic materials. 尼龙长袜用这些合成材料制成的长袜
- An alloy of copper, zinc, and tin, used in imitation gold jewelry. 金色铜一种由铜、锌和锡制成的合金，用于仿制黄金首饰
