The hydrophilic modification of PVDF microporous membrane is introduced briefly.同时简单介绍了PVDF微孔膜的亲水性改性.Microporous starch is a new kind of functional material.微孔淀粉是一种功能材料.The technology conditions of the microporous starch...
The horse answered to the slightest pull on the rein.只要缰绳轻轻一拉,马就作出反应.Her parents had kept her on a tight rein with their narrow and inflexible views.她的父母观念狭隘而僵化，对她管束很严。Mary spoiled both her children, then tried too late ...
Calls cost 36p (cheap rate) and 48p (peak rate) per minute.电话每分钟36便士（优惠费率）和48便士（高峰费率）。Cheap goods are available, but not in sufficient quantities to satisfy demand.有一些廉价的商品，但是数量不足以满足需求。A cheap table can be transformed by...