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....
幼虫和蛹的空间分布均为聚集分布.The spatial distribution patterns of larvae and pupae are congregating distribution.在蛹的阶段, 它们象断开的小枝条.In their pupa stage, they resemble broken twigs....
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 - ...