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。
In our experiment, essential oil was attempted to extract from fir immersed in urea solution.
诸如尿素和胍的离液剂能够将一些疏水化合物带入水溶液中。
Chaotropic agents, such as urea and guanidine are capable of bringing some hydrophobic compounds into aqueous solutions.
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 molecular weight of Urea Modified Sulfonated Phenol Formadehyde Resin (SPU) was determined in its aqueous solution by dynamic membrane osmometry.
用尿素饱和水溶液，有机氯化物为活化剂，生成的尿素-正烷烃络合物成球状，易于过滤分离。
With water as urea solvent and an organic chlorine compound as activator, the adducts formed into small spheres which are easily filterable.
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。
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.
该文介绍了热循环尿素工艺的主要技术特点及工艺流程，并就该工艺的特点对水溶液全循环法尿素生产装置的增产节能改造提出了参考意见。
Introduce the main technical features and process flow of heat-cycle urea process. Also put forward some Suggestions for the expansion of heat-cycle urea plant.
该文介绍了热循环尿素工艺的主要技术特点及工艺流程，并就该工艺的特点对水溶液全循环法尿素生产装置的增产节能改造提出了参考意见。
Introduce the main technical features and process flow of heat-cycle urea process. Also put forward some Suggestions for the expansion of heat-cycle urea plant.
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