They're actually metals, and they aren't really rare; they're just scattered.
它们实际上是金属，也不是真正稀有，只是呈分散状态。
The utility model has wide application for extracting rare metal, noble metal and non-ferro metals.
广泛用于提炼稀有金属、贵金属、有色金属。
Some metals are extremely rare in nature.
有些金属在自然界很珍稀。
Some metals are extremely rare in nature.
有些金属在自然界很珍稀。
应用推荐