研制了一种性能优异的易切削铋黄铜来替代有毒的铅黄铜. An environmental friendly Bi - brass with cutting - free and excellent properties was developed to substitute for Pb - brass.
Over the past forty years plastics have revolutionised the way we live.在过去的40年中，塑料彻底改变了我们的生活方式。The discovery of the new drug has revolutionised the treatment of many diseases.这种新药的发现已经使许多疾病的疗法起了根本性的变化.In other ways , Mr ...
She let the long cone of ash hang at the end of her cigarette.她让长长的烟灰留在烟头上。The little boy is licking the ice-cream cone.小男孩在舔着冰淇淋蛋卷。…a rock about eight feet high, shaped like a truncated cone.高约八英尺，形状像锥台的岩石The design pri...