Cuprous oxide is a type of material called a semiconductor.氧化亚铜是一种所谓的半导体材料.Tin free , polishing antifouling composition with cuprous oxide.含氧化亚铜的无锡自抛光防污涂料.Cuprous oxide and zinc oxide can be recovered from waste copper c...
坏天气对上午那些风笛吹奏者毫不容情。The weather was unkind to those pipers who played in the morning.这群人那天上午去了松鸡猎场。The party had been to the grouse moors that morning.我今天上午努力熨完了所有的衣服。I managed to get all the ironing done this morning....