“银合金”的英语

“银合金”的拼音为：yín hé jīn...

在这和中心之间是一种铜银合金.Between this and the core is an alloy of copper and silver.铜基合金电触头是银合金触头的换代产品.Copper - based alloy electrical contact is silver alloy contact replacement.简要分析了银合金变色的原因.The reasons why the silver alloys tar...