查询词典 urea

With application of nuclear magnetic resonance in structure researching of urea-formaldehyde resin,minor structural differences can be clearly distinguished.

在将核磁共振应用于脲醛树脂的结构研究之后，区分了结构上的细微差别。

Study on the kinetics of urea-formaldehyde resin synthesis［J］.

尿素和甲醛合成脲醛树脂粘合剂的动力学研究［J］。

This paper describes intensity property of joined timber with urea-formaldehyde resin.

本文描述了脲醛树脂胶指接材的强度性能。

Effect of organic fillers added to Urea-formaldehyde resin adhesives on shear strength and water-resistance was discussed.

主要研究了有机填料对脲醛树脂胶的剪切强度、耐水剪切强度的影响。

The results showed that the specimens impregnated with urea-formaldehyde resin had improvement in their thermal performance and compression strength.

结果表明，杨木中的功能基团与复合浸渍液中的脲醛树脂可发生键合作用，使改性木材的热稳定性及力学性能均有所提高。

Modes of modification of urea-formaldehyde resin were listed.Their properties after were also studied.

列举了脲醛树脂常用的各种改性物质及它们对脲醛树脂各种性能的改性效果。

The possibility of the synthetic technology of urea-formaldehyde resins with low formaldehyde emission under weak acidity condition was discussed.

探讨了在弱酸性条件下合成低甲醛释放量的脲醛树脂工艺的可能性。

During the 1970s, urea-formaldehyde foam insulation was used in many homes.

在20世纪70年代，尿素甲醛泡沫绝缘材料曾在许多家庭。

Effects of reaction condition in urea-formaldehyde resin production,especially during the acid stage,on the formaldehyde emission were discussed.

讨论了脲醛树脂的合成过程，特别是酸性缩聚阶段的工艺条件对树脂甲醛释放量的影响。

Effects of preparation technology of urea-formaldehyde resin modified with melamineon property of plywood were studied.

采用三聚氰胺对脲醛树脂进行改性，探讨了改性脲醛树脂的合成工艺对性能的影响。结果表明：当甲醛与尿素的最终摩尔比达到 1。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。