pure metal powder

例句：

1. 1. The engineer used a special machine to make pure metal powder.
   工程师使用一种特殊的机器来制造纯金属粉末。
2. 2.This pure metal powder is used in electronics for its high conductivity.
   这种纯金属粉末因其高导电性而被用于电子领域。
3. 3. The manufacturer claims that the pure metal powder has no harmful effects on human health.
   制造商声称这种纯金属粉末对人类健康无害。