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- But the sustained release effects are different,when the composition ratio of the system, entrapment quantity of the drug a... 但随着体系组成配比、药物包封量以及环境的不同,其缓释效果有所不同。
- The advance in the investigation on the raw materials, synthesis methods and technology, and the composition ratio of polyurethane elastomers are introduced in this paper. 摘要从聚氨酯弹性体的原料、合成方法、合成工艺、原料配比等方面介绍了聚氨酯弹性体力学性能的研究进展。
- By using single sweep oscillopolarography, the composition ratio of the adsorptive bady has been determined to be La: Zn: ARS=1: 1: 4 by the simplex method and the method of continuous variations. 在单扫示波极谱上用单纯形法和连续变化法测定了该体系吸附型体的组成比为:La:Zn:ARS=1:1:4。
- The results show that the dopant composition ratio affects the performance of nonvolatile holographic recording by altering the ultraviolet light absorption characteristics of the crystals. 结果表明,在全息记录过程中,掺杂组份比通过改变晶体的紫外光吸收特性而引起全息记录性能的改变。
- The most demulsifer with perfected molecular weights and PEO/PPO composition ratios was pick out,and it was in combination with two assistants,improved the capability of the demulsifier. 并在此基础上复配了两种助剂,对乳状液的破乳脱水效果起到了进一步的改善。
- A series of nonionic block polyether demulsifiers with different molecular weights and PEO/PPO composition ratios were synthesized for high asphaltene crude oil in Shengli Oilfield. 本文针对胜利油田高含沥青质原油合成了一系列不同分子量和PEO/PPO比值的嵌段聚醚型破乳剂,并考察了其对高含沥青原油的破乳脱水规律。
- He sweated out his composition in several hours. 他苦干了几个小时才写出了作文。
- He wrote a composition or (he) read an essay. 他写作文或读散文。
- His composition is far superior to mine. 他的作文比我的好多了。
- The ratio of students to teachers is 35:1. 学生和老师的比率是三十五比一。
- The ratio of schoolboys to schoolgirls is 2 to 1. 男学生和女学生的比例是2比1。
- A slow, mournful musical composition. 庄重悲哀的乐曲节奏缓慢，庄重悲哀的音乐作品
- Men outnumber women here in the ratio of three to one. 此地男子数量以三比一超过女子。
- He has a touch of madness in his composition. 他有点疯疯癫癫。
- The first or last term of a ratio or a series. 首项，末项比率或数列中第一个或最后一个项
- I'd like to have your advice on my composition. 我想请您对我的作文作些指导。
- She looked at her son's composition with a frown. 她对儿子的作文皱眉头。
- The composition of the report took two months. 写这份报告花了两个月时间。
- We examined the rock to find out its composition. 我们检验了这一石块,想弄清它的构成成分。
- He has a touch of stubbornness in his composition. 他脾气有点倔。
