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- fractional composition of petroleum 石油馏分组成
- Abstract: The fraction compositions, group compositions and structure compositions of seve n catalytic stocks were determined by means of vacuum distillation, mass spectrum , element analysis and molecular mass measurement. 文摘:采用减压蒸馏、质谱分析、元素分析和分子质量测定对辽河原油的7种催化原料油进行了馏分组成、族组成和结构族组成的分析。
- On the basis of compared mutually the activa-tion, fractions composition and quantitative 13C-NMR spectrum, most suitable concentration of humates to accelerate wheat germination was defi ned. 在对比其腐植酸盐活性、级分组成和13C-NMR波谱定量数据的基础上,提出了腐植物质的结构特征和性质之间的关联模型,以便在不进行试验室和田间试验的情况下能有效地探寻新的活性腐植酸盐类。
- Speech is fractional; silence is integral. 讲话是分数; 沉默是整数。
- He sweated out his composition in several hours. 他苦干了几个小时才写出了作文。
- The soil absorbs only a fraction of the rain that beats down. 土壤只吸收猛打到地面上的雨水的一部分。
- He wrote a composition or (he) read an essay. 他写作文或读散文。
- I'll be ready in a fraction of a second. 我马上就好。
- His composition is far superior to mine. 他的作文比我的好多了。
- The story does not contain a fraction of truth. 这故事没有一点真实性。
- He has done only a fraction of his homework. 他只做了家庭作业的一小部分。
- 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
- The car stopped within a fraction of an inch of the wall. 汽车在离墙不到一英寸的地方停住了。
- He has a touch of madness in his composition. 他有点疯疯癫癫。
- 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。
- Could you move a fraction closer? 你能不能稍微再挪近点儿?
- 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。
