The main classes of materials are metals, polymers, ceramics, and composites.材料的主要分类为金属 、 高聚物, 陶瓷, 及合成材料.Silane coupling agents are also used in many commercial sand - epoxy - type composites.硅烷偶联剂亦用于许多通用的砂子环氧型复合材料中.Many...
A deformable layer theory does not appear to be tenable in glass - reinforced composites.变形层理论在玻璃增强复合材料中说服力不强.In this paper, the processing technology of glass fibre reinforced polyetheretherketone ( PEEK ) composites an...
The Dunhuang frescoes are gems of ancient Chinese art.敦煌壁画是我国古代艺术中的瑰宝.a crown studded with gems镶有宝石的皇冠These crystals occur in nature and are the gems known as rubies.这些晶体是天然存在的,人们称之为红宝石.One who cuts , polishes, or engrav...
They plowed nearly 100,000 acres of virgin moorland.他们犁了将近10万英亩未开垦的高沼地。She plowed the meadow into a garden and set up brooder house and barn.她把草地犁成菜园,还搭了鸡舍牛房.The plane had plowed a path through a patch of forest before c...