These include dyes, adhesives, solvents, detergents, metals, and other foreign materials.其中包括染料, 粘合剂, 溶剂, 洗涤剂 、 金属等外界物质.Preparation, properties and kinds of polyurethane adhesives were described.综述了聚氨酯胶粘剂的合成 、 特性和种类.The ...
On the surface tension of small oilysludge calendering coated paper, laminating adhesives to guarantee a better.对表面张力小的压光涂布纸基材覆膜加工时,要保证胶粘剂有较好的流平性.These include dyes, adhesives, solvents, detergents, metals, and other for...
He nodded absently.他漫不经心地点了点头。He nodded absently, his attention absorbed by the screen.他专心注视着屏幕,只是心不在焉地点了点头。She absently twisted her wedding ring.她心不在焉地搓动着她的结婚戒指....
The fossils at Dinosaur Cove are embedded in hard sandstones.恐龙峡谷中的化石都嵌在坚硬的砂岩中。The largest brain possessed by any dinosaur weighed about a kilogram.最大的恐龙脑子大约有一公斤重.In Alberta and Saskatchewan there are many hills where di...