In our experiment, essential oil was attempted to extract from fir immersed in urea solution.
本实验尝试使用尿素水溶液浸泡杉木根后再用水蒸气法提取杉木根精油。
The calculation method for climbing film evaporator was used to simulate the evaporators of first stage and second stage urea solution.
本文采用升膜式蒸发器的计算方法对尿素一段、二段蒸发器进行模拟计算。
The method for removing nitrogen oxides in the effluent gas from manufacturing nitric acid by using acidic urea solution as an absorbent to absorb the nitrogen oxides is introduced.
介绍用酸性尿素溶液作吸收剂，吸收硝酸尾气中氮氧化物的净化方法。
The effects of acetic acid and urea content on rheological parameters of chitosan solution are discussed.
研究了甲壳胺溶液中的醋酸和尿素含量的改变对溶液流变参数的影响。
The service of the self-sealed valve in Urea Plant with ammonia technic was introduced, and the cause of the seal leakage was analyzed, the solution of local maintenance was pointed out.
介绍了自密封阀在氨汽提尿素装置中的应用情况，对其泄漏原因进行了分析；并提出了具体维修方案。
The molecular weight of Urea Modified Sulfonated Phenol Formadehyde Resin (SPU) was determined in its aqueous solution by dynamic membrane osmometry.
用动态渗透压法，在适量含盐的水溶液中测量聚电解质——尿素改性磺化酚醛(SPU)的分子量。
The urease catalyzes the hydrolysis of urea. It was found that the signal could be enhanced if an ethanol solution of urease was used for the reaction.
发现将脲酶配制成一定浓度的乙醇溶液能显著地增强激光光偏转信号强度。
Monodispersed NiO precursor particles were prepared by homogeneous precipitation from nickel nitrate solution in the presence of urea.
采用尿素均相沉淀法制得了均分散的氧化亚镍前驱体粒子。
TGS crystals doped with urea have been grown from aqueous solution. The pyroelectric properties of UTGS crystals are determined. The results show that UTGS has better pyroelectric properties.
利用降温法生长掺尿素的UTGS单晶，测试了晶体的热释电和介电特性。结果表明，尿素的掺杂提高了晶体的热释电性能。
The water solubility of urea-formaldehyde resin is evaluated by the stability of resin solution and the water diluted solution.
通过树脂液及水稀释液的稳定性来研究脲醛树脂的水溶性。
A spectrophotometry method, which based on the reaction of diacetylmonoxime and urea in acidic solution, was established for determination urea in bovine milk.
根据二乙酰一肟与在酸性条件下尿素的反应，建立了一种分光光度法快速测定牛奶中尿素含量的方法，该方法可以定性和定量测定牛奶中尿素含量。
This article analyses the cause of high energy consumption of urea plant with aqueous solution total recycle process and the feature of modified aqueous solution process.
分析水溶液全循环法尿素装置能耗高的原因，介绍改进型溶液法的特点。
The experiment belongs to wet type flue gas treatment technique, studying the removing of SO_2 and NO_X from analog flue gas using urea and potassium permanganate solution as the absorbent.
本试验采用吸收剂为尿素和高锰酸钾的湿法工艺对模拟烟气中的SO_2和NO_x进行脱除的试验研究。
This paper illustrates the metabolic changes of wheat leaves during laten period senescence, and the effects of spraying solution(2% urea and 10ppm 6-BA)at the time cf heading.
本文探讨了小麦叶片生育后期衰老过程中的代谢变化以及抽穗期喷施氮肥、6—苄基腺嘌呤（6—BA）的影响。
This paper illustrates the metabolic changes of wheat leaves during laten period senescence, and the effects of spraying solution(2% urea and 10ppm 6-BA)at the time cf heading.
本文探讨了小麦叶片生育后期衰老过程中的代谢变化以及抽穗期喷施氮肥、6—苄基腺嘌呤（6—BA）的影响。
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