尿素

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。

In order to study the effect of high density ensilaging techniques on the fermentation quality of the silage, eight combination (alfalfa、smooth bromegrass、alfalfa + smooth bromegrass、alfalfa +corn flour、alfalfa + smooth bromegrass+ corn flour、smooth bromegrass + corn flour +urea、cornstalk and cornstalk + corn flour +urea) were used in this experiment.

为研究高密度青贮技术对青贮发酵品质的影响，本试验分别选用3种不同牧草、3种不同牧草与精料配合(苜蓿、无芒雀麦、苜蓿+无芒雀麦、苜蓿+玉米面、苜蓿+无芒雀麦+玉米面、无芒雀麦+玉米面+尿素、青贮玉米、青贮玉米+玉米面+尿素)，在3种不同工艺——高密度青贮、常规青贮、高密度压块青干下对高密度青贮与常规青贮的发酵品质及青贮前后营养物质的变化及高密度青贮与高密度青干块营养物质的变化进行比较研究。

Nitrogen fertilizer sources subject to ammonia volatilization losses are urea, urea-ammonium nitrate solutions, and anhydrous ammonia.

容易形成氨挥发损失的氮肥品种有：尿素、尿素-硝酸铵溶液和液氨。

Have you ever read the ingredients on a bottle of shampoo and wondered what "urea" was?

你曾经阅读到洗发剂瓶子的成分并惊奇有"尿素"？

I found adulteration is extremely widespread: urea, soap powder, starch are very popular additives.

我发现造假非常普遍：尿素、洗衣粉和淀粉是非常普遍的添加剂。

Canada is rich in natural resources, for ammonia, urea, methanol and ethylene production.

加拿大有丰富的天然气资源，用于合成氨、尿素、甲醇和乙烯的生产。

In addition to SnO2 nanoblades, In-doped SnO2 nanoblades were also synthesized on a glass substrate covered with a SnO2 buffer layer in an aqueous solution consisting of (SnCl4E5H2O+ InCl3E4H2O) and (NH2)2CO in presence of NaOH at 900C.

除了SnO2奈米叶片，以(SnCl4.5H2O +InCl3E4H2O)、尿素(NH2)2CO和NaOH为配方，在90°C持温24h，我们也可以在镀有SnO2 缓冲层的玻璃基板合成出大面积的In-doped SnO2奈米叶片。

Many influential factors of this method were analyzed. The experimental results indicated: the mole ratio of urea, sodium hypochiorite and sodium hydroxide was controlled within the range of (1.10~1.12):1:(2.30~2.42), the temperature of low temperature reaction must be controlled under 20℃, the high temperature should intensify fast to backset current temperature while reacting and the time for raising temperature only within 5min, and the yield of hydrazine hydrate can be reach about 75.1%.

实验分析了尿素法生产水合肼的各种影响因素，实验表明，尿素、次氯酸钠与氢氧化钠的摩尔比为(1.10~1.12)：1：(2.30~2.42)，低温反应温度控制在20℃以下，高温反应阶段快速升温至回流后反应5min左右时，水合肼收率可达75.1%左右。

Examples of humectants include lactic acid, urea (the urea found in creams is synthetically produced by combining one molecule of carbon dioxide with two molecules of ammonia and not obtained from urine), hyaluronic acid (able to retain 1000 times its weight of water), propylene glycol, glycerin, sorbitol, gelatin, lecithin, sodium pyrrolidone carboxylic acid, and butylene glycol.

常见的湿润剂有乳酸，尿素（面霜里的尿素来自于二氧化碳和氨分子的合成而不是从尿中提取的），透明质酸（能保持自身成分1000倍的水分），丙二醇，丙三醇，山梨糖醇，明胶，卵磷脂，吡咯钠，羧基酸和丁二醇。

Four nitrogen sources were used in the experiments, i.e. urea, casein, lysine and methionine.

主要选用了四种氮源：尿素、酪蛋白、赖氨酸和蛋氨酸。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。