The preparation of sulfate heptahydrate and copper sulfate pentahydrate from calcined zincblende was investigated.用经高温煅烧后的闪锌矿石与稀硫酸反应制备七水硫酸锌和五水硫酸铜.Modified polymerized sulphate flocculating agent was made with ferrous sul...
He wolfed down the rest of the biscuit and cheese.他把剩下的饼干和奶酪一扫而光。He wolfed ( down ) a good meal.他 狼吞虎咽 地吃了一顿美餐.The Russian soldiers sampled the officers' rations and wolfed the superior food with delight.俄军士兵尝了一下长官的...
为达到理想的视觉效果有时还会加入颜料和染色剂.Pigments and tints are sometimes added to achieve the desired visual effect.用对比染色剂染 ( 显微术样本 )To color ( a microscopic specimen ) with such a stain.汽水中使用的染色剂也是一种致癌物质.Colorings used in sodas are canc...