查询词典 urea-formaldehyde

The release characteristics of coated urea were determined by means of water marinating and soil incubation.

但是，长期大量施用化学肥料，特别是尿素、碳铵等低利用率肥料对环境所造成的负面影响，如蔬菜和地下水中的硝酸盐含量超标、地表水的富营养化等，也日益严重，对人类的健康已构成了潜在的威胁[1]。

The liquid paraffins obtained from urea-dewaxing process generally contain aromatic hydrocarbons in the range of 3~10%.

用尿素脱蜡方法生产出来的液体蜡，一般都含有3～10%的芳香烃。

Separation of straight-chain α-olefins and paraffins from coker gas oil by urea dewaxing was tested in a laboratory.

对尿素脱蜡工艺从焦化柴油中分离直链α-烯烃和直链烷烃的工艺路线进行了试验研究，用异丙醇和水混合溶剂溶解尿素，与焦化柴油进行络合反应。

The result of simulation based on the method we have suggested on urea evaporation and pelleting shows the performance is satisfied.

这种分布式的框架结构同以往的集中式的诊断方法相比，无论是在通信需求还是在计算复杂度上都具有显著的优越性。

The corrosion preventions of urea prilling towers have inner corrosion and outer corrosion.

尿素造粒塔的腐蚀有内部腐蚀和外部腐蚀。

Antiseptic technique ; Urea prilling towers ; Antiseptic mechanism

防腐技术；尿素造粒塔；防腐机理

This paper mainly discusses the corrosion condition in urea prilling tower , hereby including anti-corrosion materialsand other technology are mainly covered, especially vinyl ester resin compound with glass flake.

详细阐述了尿素造粒塔的腐蚀机理，就其中的内外侧的防腐蚀形态进行了总结，并就此针对性的进行了防腐蚀材料的推荐及设计，尤其是玻璃鳞片胶泥。

Through the analysis,the antiseptic technique of urea prilling towers mainly adopts glass flaks and cationic chloroprene latex cement mortar lining technology.Finally,some sa...

通过分析，尿素造粒塔的防腐技术主要采用玻璃鳞片衬里技术和阳离子氯丁胶乳水泥砂浆衬里技术，最后提出了防腐的施工技术与安全建议。

The feature of urea base compound fertilizer prilling process is introduced, the effecting factors and control mode of prilling with granule method are also discussed from the aspects of granule size of prilling material, liquid phase required amount, chemical reaction heat and prilling temperature etc.

介绍尿基复肥造粒工艺的特性，从造粒物料的粒度、液相需量、化学反应热和造粒温度等方面论述了团粒法造粒的影响因素及调控方

Author has described the corrosive mechanism of urea prilling tower;analyzed the property index and usage effect for anti-corrosive materials of adopted coating, FRP and glass flake mortar etc.

阐述了尿素造粒塔的腐蚀机理；针对造粒塔外壁、内壁和塔底的腐蚀形态，分析了采用涂料、玻璃钢和玻璃鳞片胶泥等防腐蚀材料的性能指标和使用效果；通过对防腐材料构造和防护特点的对比，提出了防腐蚀衬里选材的相关建议。

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。