Situations of preparing isocyanate trimers at home and abroad are mainly introduced.主要介绍国内外异氰酸酯三聚体的制备状况.Polyether - type isocyanate prepolymers are prepared with polyether polyols and tolylene diisocyanate.采用聚醚多元醇和甲苯二异氰酸...
Polyether - type isocyanate prepolymers are prepared with polyether polyols and tolylene diisocyanate.采用聚醚多元醇和甲苯二异氰酸酯合成了聚醚型异氰酸酯预聚体.A polyamide imide was synthesized from trimellitic anhydride and di isocyanate.本文用偏苯三酸酐和二...
Most of the senior boys are going steady with juniors and sophomores.四年级的男生大都总是要同三年级和二年级的学生一起去的.Over half the students in the course are sophomores.听这门课的一大半是二年级学生.We are freshmen and they are sophomores.我们是一年级学生,他们是二年级学生...
This new global communication net breaks through all geopolitical barriers.这种新的全球通信网突破了所有的地缘政治障碍.Hurdling events are dashes in which competitions must clear a series of ten barriers called hurdles.在跨栏项目中,运动员需要跨过十个栏.Tarif...
他对教会中日益增强的自由主义倾向心存忧虑。He was concerned over growing liberalism in the Church.当风力增强的时候,突然刮起一阵大风.As the wind freshened there came a sudden squall.一 幅图象 逐渐增强的同时另一幅图象逐渐暗淡.The simultaneous fade - up of one image and fade - dow...
You look like a melodious madrigal, beautiful snowy mountain, beautiful prairie.你象一只悠扬的牧歌, 美了雪山, 美了草原.The madrigal that writes to you still sings.写给你的情歌还在唱....
The FBI kept a voluminous file on Pablo Picasso.联邦调查局保存了有关巴勃罗·毕加索的大量档案。I sank down into a voluminous armchair.我一下子坐在了宽大的扶手椅里。She tucked up her voluminous skirts to make room for Jane beside her.她掖起膨松的裙边给旁边的简腾出地方....
Videos are also relatively inexpensive to dub into multiple languages.相较之下,在录影带下加上不同语言的字幕也比较没那麽贵.I yell in the piece also am the later period dub.我在片中的叫喊也是后期配音.Use your finger tips around the eyes and nose . Dub delicate...