查询词典 urea-formaldehyde

The corrosion behaviour and mechanism of superpure austenitic stain-less steel 00Cr25Ni22Mo2N in urea processing environment was studied.

运用金相、电子显微镜观察及表面分析技术，研究了超纯奥氏体不锈钢00Cr25Ni22Mo2N制造的汽提管在尿素生产环境下的腐蚀形态和机理。

The results indicate that, comparing with the crystallization without urea, the time of crystal occurrence is 1.5 times longer, the density of suspensoid is raised by 50%, both of crystal length and crystal width are increased, especially...

粒度分布的定量分析显示，尿素硫酸摩尔比为 3.6：1、过程温度80℃时，硫酸钙的成核速率减少了25%，但结晶成长速率增加了1.2倍，结晶粒度分布中心由72.8mm 增大到 142.8mm，平均粒径由70.98mm 增加为 105.45mm 。

In this organogel structure, the p–p stacking interactions among the HPB moieties, the hydrogen-bonding interactions between the urea moieties, and the van der Waals forces between the long alkyl chains cooperatively stabilized the aggregate structure; these are well-known interactions in gel systems.2a,5 Specifically to clarify the effect of the hydroxyl group in the HPB unit on gelation, we also designed and synthesized reference compound 2, which does not contain an adjacent hydroxyl group and thereby cannot induce its planar keto tautomer upon excitation.

在这个organogel结构、p-p叠加之间的相互作用在HPB根、实验之间的相互作用尿素根之间，范德华力长链烷基之间的合作稳定了合计结构；这些都是著名的交互作用的凝胶 systems.2a明确厘清，羟基的效果集团在HPB装置设计和凝胶，我们也是合成的化合物、参考不包含了邻近的羟基从而无法归纳其平面在keto tautomer激励。

By orthogonal design, the optimal fermentation medium for the cellulase production of the strain was 73% wheat bran, 10% soybean meal, 15% corn grain tegument, 2% ammonium sulfite, 0.15% urea, 0.05% potassium dihydrogen phosphate, 0.1% magnesium sulfate.

采用正交试验法，对该菌株生产纤维素酶的培养基配方进行了优化，确定了生产用最适培养基配方：麸皮73%，豆粕10%，玉米皮15%，硫酸氨2%，尿素0.15%，磷酸二氢钾0.05%，硫酸镁0.1%。

Blue electronic ink microcapsules containing phthalocyanine blue BGS particles homodispersed in tetrachloroethylene were prepared by in situ polymerization using Urea-formal-dehyde as wall material.

利用脲甲醛树脂为壁材制备了以酞菁蓝 BGS颗粒分散在四氯乙烯中的悬浮液为核材料的蓝色电子墨水微胶囊。

Controlled-release membrane was prepared based on the phase inversion method in which circulated urea particles were coated with polyethylene and olefin dispersed in tetrachloroethylene solution. The effect of atomizing on the membrane structure and nutrients release characteristics was investigated systematically.

利用喷雾相转化法将聚乙烯和石蜡溶于四氯乙烯的溶液喷射到处于流化状态的大颗粒尿素上，制备控制肥料养分释放的控释膜，系统地研究了喷雾－相转化－成膜过程中雾化状态对控释肥料膜结构和养分释放性能的影响。

It may easily fast appraise the intestinal tract pathogenic bacteria using the trisaccharide iron urea indol culture medium recombination

应用三糖铁尿素靛基质培养基再结合血清凝集可简便快速地鉴定出肠道致病菌。

The colony positive rate exam which after the trisaccharide iron urea indol culture medium is 28.91%,higher than the exam the colony positive rate using the trisaccharide iron culture medium (7.67%).

经三糖铁尿素靛基质培养基筛检出的菌落阳性率为28.91%，比三糖铁培养基筛检出的菌落阳性率（7.67%）高。

A series of coated urea and coated compound fertilizer were prepared with rosin and Tung oil as film-forming materials.

以桐油为主要成膜材料制备了桐油包膜尿素和桐油包膜复合肥料。

They can be chosen as a organic urea enzyme inhibitor.3 The adsorptive effect of some additive that the power of zeolite is ,which can adsorb big molecules and ions, is regard as a good additive.4 The adsorptive effect of some bond indicated that HA of turfy soil and CMC were both good bonds.

缓释氮肥PCF、磷钾肥和硝化抑制剂双氰胺进行三因素五水平的二次通用旋转组合模型设计：对于油菜硝酸盐在生育期内的动态变化规律来说，PCF、磷钾肥和双氰胺过高、过低都不利于油菜的正常生长，中量水平处理时较好。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。