查询词典 urea

Under the condition of four successive plantation of leafy vegetables with the same amount of phosphorus and potassium, Urea, ammonium bicarbonate and their combined application with organic fertilizer experiment indicated that growth and yields of leafy vegetables in the urea treatment was better than those in ammonium bicarbonate treatment, but the difference declined with temperature decreasing.

连续种植4茬叶菜，在磷、钾肥用量一致的情况下，尿素、碳铵及其配施有机肥的试验表明：尿素处理的生长状况和产量结果好于碳铵处理，但这种差异随气温降低而逐渐收窄；尿素、碳铵分别配施有机肥的两处理产量差异较小。

These two factors result in difficult control of water and powder in urea , lowering down urea quality.

这两个因素引起成品尿素中的水分及粉尘难以控制，降低了成品尿素质量。

Urea reactor is the core equipment of urea synthesis devices.

尿素合成塔是尿素合成装置的核心设备。

Humic acid used as a synergist of urea can enhance utilization rate of urea,consequently increases crop yield.

提高氮肥尤其是尿素的氮素利用率是当今植物营养领域的研究热点之一。

It has been shown that tautomerism has a significant effect on the QSAR modelling, and the models obtained from 1H-indazol tautomeric form always represent higher quality than those from 2H-indazol tautomer, which indicates that 1H-indazol tautomer of the indazolyl urea is probably the active form when binding with the TRPV1 channel protein. It has also been demonstrated that the theoretical descriptors derived from electrostatic potentials on molecular surface together with the GETAWAY descriptors can be well used to express the quantitative structure-activity relationship of indazolyl urea TRPV1 channel antagonists.

结果表明：互变异构对QSAR结果具有一定的影响，采用1H-吲唑异构形式得到的模型，在质量上均高于采用2H-吲唑异构体，预示着1H-吲唑异构体更有可能是吲唑脲类分子的活性异构形式；分子表面静电势参数结合GETAWAY参数可以较好地用于描述TRPV1通道拮抗剂分子结构与其活性间的定量关系。

According to the analysis of the complex physics property of urea synthesis system, the enthalpies model is proposed to predict the behavior of the thermal balance of Urea synthesis reactor.

针对尿素反应过程模拟与计算中涉及到的热量衡算，在水溶液全循环法的尿素工艺流程条件下，对常用的扩展的UNIQUAC方程、PHS状态方程以及经验公式的焓值计算方法进行了对比研究，确定了尿素合成过程的焓值计算方法。

However, urea reactor failures are closely related to their design, manufacture, installation, usage, inspection, repair and transformation. Each factor could have important impact on the failures of urea reactors.

但是，由于尿塔的失效与其设计、制造、安装、使用、检验、修理以及改造等都有密切的关系，每一个环节对尿塔的失效都可能产生重要影响。

A description is given of the analytical method for the determination of the urea content in slow-release urea by the p-dimethyl aminobenzaldehyde spectrophotometry.

摘要介绍用对二甲氨基苯节醛分光光度法测定缓释尿素中尿素含量的分析方法。

Off-line HPLC coupled with MS gives the result that 4-chlorophenyl urea and 2-chloro-N-(4-chlorophenyl) benzamide are two photoproducts. In comparison with their retention times and UV specta with those of standards, some other photoproducts identified are 2-chloro benzamide, 4-chlorophenyl urea and 4-chloro aniline.

收集光解产物各级分，采用直接进样法在MS上测得其中的二种光解产物为对氯苯基脲和N-邻氯苯甲酰胺：通过与标样在同样HPLC条件下的保留时间和UV吸收光谱相对照，证明产物中存在有邻氯苯甲酰胺、对氯苯基脲和对氯苯胺等。

Stop drug 4 week hind check enzymatic experiment of gastroscope, fast urea and 14C urea are expiratory experiment, evaluate Hp eradicative rate and cankerous heal rate.

停药4周后复查胃镜、快速尿素酶试验和14C尿素呼气试验，评估Hp根除率及溃疡愈合率。

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。