铬在自然界中广泛分布, 生物体中主要以三价铬的形式存在.Chromium is widely distributed in nature, organisms mainly trivalent form of chromium.400系列不锈钢–一种铁 、 碳和铬的合金.Series Stainless Steel – An alloy of iron, carbon, and chromium.研究了不溶性腐殖酸对六价铬的吸附作用.T...
In olden days the coasts of England were harassed by the Vikings again and again.古时候,英国沿海一带一再受到北欧海盗的窜扰.All over the world, oil spills regularly contaminate coasts.在世界各地，油溢出物经常污染着海岸。Of necessity they are sited near the co...
I set the log on the ground and shaved off the bark.我将原木放到了地上，刨掉了树皮。The doctors shaved his head.医生将他的头发剃去了。He took a bath and shaved before dinner.晚餐前他洗了澡，刮了脸。...
His youth disqualified him from getting the job.他太年轻,因而没能得到这份工作.A blind girl is not a bit disqualified from answering a telephone.盲女对于接听电话的工作是一点也不会不合格的.But what shall we do if the goods are found disqualified or short on...