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...
There are several gates providing ingress to the meadow in this picture.在这张画上有几个进入草地的篱笆门。ingress pipe导入管A high seating position makes ingress and egress easy.较高的座椅位置使入口和出口容易.ingress of dust尘埃入侵a means of ingress进入的方法The ...
Manufacturing processes may be affected by the functionality of the product.生产过程可能要受到产品设计目的的影响。It is significantly more compact than any comparable laptop, with no loss in functionality.它比同类笔记本电脑小巧很多，但功能未减。We have, there...