查询词典 urea-formaldehyde

Under 50%, 60% and 70% field capacity, ammonium nitrogen content in soil with water soluble felted and coated fertilizer was in positive correlation to water content, and nitrate nitrogen content after 24 d was more than that with urea treatment.

在田间持水量50%、60%、70%条件下，微水溶性胶结包膜缓释肥料土壤铵态氮含量变化与水分呈正相关关系，24 d后硝态氮含量呈高于尿素处理趋势。

The Korean engineering company is designing and constructing a $1.2bn turnkey ammonia and urea plant for FERTIL.

韩国工程公司正在设计和建造交钥匙12亿美元的氨和尿素装置的子宫。

Above organs emerged different damage in crude middle and high dose and processed high dose after 3 months and serum indicators- creatinine, urea nitrogen manifestly were increased, the coefficients of liver, kidney and gaster manifestly were heightened.

连续给药3个月，生品的中、高剂量组和炮制品的大剂量组均出现了上述脏器程度不同的损伤，可见血清生化指标的肌酐、尿素氮明显升高，肝、肾、胃脏器系数明显增加。

Firstly, wettability and adhesive properties of the major soy protein components conglycinin (7S) and glycinin (11S) after urea modification were characterized. Modified 7S and 11S soy proteins were evaluated for gluing strength with pine, walnut, and cherry plywood and for wettability using a bubble shape analyzer. The molecular structure change was studied by chemical analysis, DSC and Rheometer. The results showed that different adhesives had varying degrees of wettability on the wood specimens.

液滴形状分析结果表明不同的胶粘剂在不同的木块上有不同的湿润性能，7S蛋白经过尿素变性后在胡桃木和樱桃木上有较好的湿润性能，11S蛋白经过1 mol/L尿素变性后在松木上有好的湿润性能。1 mol/L尿素变性使得11S蛋白在三种木块上的胶粘强度在所有胶粘剂中为最大；3 mol/L尿素变性使得7S蛋白在胡桃木和樱桃木上的胶粘强度比11S的大，但在松木上的胶粘强度则是11S/3M高于7S/3M。

A series of novel chrome-free tanning agent s were synthesized from urea,glyoxal,glycine and melamine.

合成了六种新型的同系列的无铬鞣剂；用红外光谱分别证实了它们带有的官能团的存在；并采用氨基酸分析来初步研究这些无铬鞣剂的鞣制机理。

The molybdoneodymium heteropoly compound K_(11)[YPMo_(11O_(39)_2] was synthesized and used as catalyst in the synthesis of glyoxal by hydrogen peroxide and condensation of urea from allantoin .

尿囊素是一种被广泛应用于医药、农业和轻化工领域的重要的精细化工产品。

D, L-p-HPH was produced by employing amidoalkylation reaction of phenol with glyoxylic acid and urea under acidic conditions.

用尿素、乙醛酸和苯酚合成底物D，L-对羟基苯海因，收率为62％，与文献报道相近。

Allantoin was synthesized from glyoxylic and urea as raw materials using organic acid such as formic acid,oxalic acid and organic sulfonic,and one or two of organic acids such as hydrchloric acid,sulfuric acid and acetic acid catalyst.

以乙醛酸和尿素为原料，有机酸(如甲酸、乙二酸、有机磺酸等)、无机酸(如盐酸、硫酸、磷酸、醋酸等中的一种或两种)作催化剂合成了尿囊素产品。

A software based on this model has developed and been used in the design of 5 vapor heaters in the large granulated urea project.

提出了以风侧流阻最小为目标函数，传热负荷与迎风面尺寸为约束条件的双金属翅片管换热器优化设计模型，并开发出了相应的设计软件，成功地进行了在尿素大颗粒工程中五台蒸汽加热器的优化设计。

In addition, based on a project case under water-inrush hazard, the field experiment has also been carried out; contrasted to other types of grout, such as cement with super fine slag, cement and water glass double grouts, and urea resin harnstoffharz, the applications and advantages of this chemical grout on inrush of high-pressure water controlling has further been proved.

以深部地下工程的加固和高压突水治理为研究对象，对一种新型化学注浆材料的化学反应封堵机制进行了可行性分析，并针对化学浆液的流动性、渗透性、抗冲刷性以及固结体的强度、水质毒理等因素进行了室内试验研究，详细地分析了浆液的物理化学特征，给出了浆液最佳配比值以及相应的性能指标。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。