您要查找的是不是：
- I do not know why acids eat in metals. 我不知道酸腐蚀金属的原因。
- Alkal metals 碱金属
- Copper and gold are both metals. 铜和金都是金属。
- Metals undergo expansion when heated. 金属加热时会膨胀。
- It follows that acids eat in metals. 由此可知，各种酸对金属都有腐蚀作用。
- Memory has been shown to reside in some metals. 已经证实，记忆存在于某些金属中。
- Metals expand when they are heated. 金属遇热则膨胀。
- She knows why the metal is the good conductor. 她知道金属为什么是好的导体。
- Some metals weld better than others. 有些金属容易焊，有的不容易焊。
- Metals contract in cold weather. 金属在寒冷的天气里收缩。
- Certain metals are attracted to a magnet. 某些金属会受磁石的吸引。
- Metals contract as they get cooler. 金属遇冷则收缩。
- Can I fasten these metal plates with rivets? 我可以用铆钉把这些金属板固定在一起吗？
- The acid eats into metals quickly. 酸腐蚀金属很快。
- You need a strong adhesive to bond wood to metal. 需要强力胶才能把木料粘在金属上。
- The car was now just a pile of twisted metal. 那辆汽车已经成了一堆压缩的废铁了。
- The metal basin clattered down the stone stairs. 金属盆子沿着石阶滚了下去，发出咣啷声。
- Aluminum is a kind of light silvery metal. 铝是一种轻薄并呈银色的金属。
- The aeroplane wing showed signs of metal fatigue. 机翼显出有金属疲劳的现象。
- Various metals are used to make the parts of this machine. 这部机器的零件是用多种金属制造的。
