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This clearly indicated the reaction of the hydroxymethyl group of the formaldehyde resin with the isocyanate group.This effect appeared to be valid whatever the type of formaldehyde resin used was. 这清晰地表明了甲醛基树脂中的羟甲基与异氰酸酯基团能够发生反应，无论使用的是哪种甲醛基胶粘剂，这种作用似乎都是适用的。
On heating, condensation reaction of the hydroxymethyl groups in the complexes takes place and forms methylenes or carbonyl groups. 固化过程中有小分子放出使配合物快速失重;
Education should not be restricted to any one specific age group. 教育不应限制在任何特定的年龄组上。
CHELATE REACTION BETWEEN BORATE IONS AND PHENOL HYDROXYL GROUP, ORTHO-POSITION HYDROXYMETHYL GROUP OF PHENOL-FORMALDEHYDE RESOL RESIN 硼酸根与甲阶酚醛树脂中酚羟基和邻位羟甲基的螯合反应
He broke away from that lawless group years ago. 他在几年前脱离了那个非法团体。
The group of barbaric soldiers killed many people. 那群野蛮的士兵杀了很多人。
The group was made up of doctors. 这个团体是由医生组成的。
A group of boys dashed out of the classroom. 一群男孩子从教室里冲出来。
I come upon a group of children play in the street. 我遇到一群孩子在街上玩耍。
He goes about with a group of nice boys. 他经常和一群好孩子在一起玩。
He is a the most brisk young man in this group. 他是这个小组中最活跃的年轻人。
He showed me a photo of a family group. 他给我看一张合家欢的照片。
The chief accountant of a manufacturing group. 一个制造业集团的总会计师。
The hunting group had good sport today. 今天打猎小组满载而归。
I stand out in a group interview. 在集体面试中脱颖而出。
He looked around the small group of mourners. 他环顾一下那一小群的送葬者。
The group of destroyers damaged the bus. 那群破坏者毁坏了这辆公共汽车。
He is the mainstay of our theatre group. 他是我们剧组的台柱。
The group tour the museum at a leisurely pace. 这个旅游团悠闲地参观这个博物馆。
The discussion group meets in the mornings. 参加讨论的人都在上午开会。