Water - borne polyurethane is the predominant material of membrane pressing adhesive.水性 聚氨酯是真空吸塑胶的主要成分.The water - borne polyurethane was based on polyester diol and toluene diisocyanate etc.以聚酯多元醇、甲苯二异氰酸酯为主要原料合成了 水性 聚氨酯...
These crustaceans provide a valuable food source for some fish.这些甲壳纲动物是某些鱼类重要的食物来源.When the tide ebbs it's a rock pool inhabited by crustaceans.退潮时，它便成为甲壳动物居住的岩石区潮水潭。Sir. J . Lubbock has recently remarked , that sev...
一棵棵高大橡树的枝条随风摇摆。The wind was bouncing the branches of the big oak trees.窗户外边是一块草地，高高的草随风摇摆。The windows overlooked a lawn of tall waving grass.船在波涛起伏的海浪中剧烈摇摆。The boat rolled heavily in the troughs between the waves....
附有索引的增补卷已经出版.A supplementary volume has been published containing the index.波特设计了一种机械查找索引的系统.Potter had devised a system of mechanically searching these indexes.无线电爱好者的电台 呼叫信号 一般是以呼号 、 姓名和地址来索引的.Ham radio call sign on - ...