二乙醇胺

Ethanol was substituted for N,N-dimethyl sulfoxide as solvent of colouring agent pyrazolone and better results were obtained.

改用无水乙醇代替N，N-二甲基甲酰胺作为显色剂吡唑啉酮的溶剂，效果更好。

The calcium was determined by xylenol orange-CTMAB-absolute ethyl alcohol complexation color in the gelatin.

以二甲酚橙—十六烷基三甲基溴化胺—无水乙醇络合显色体系测定了明胶中的钙。

Seven compounds have been isolated from hard coral Acropora pulchra. These compounds are:pentadecoic acid, heptadecyl ester;(2)n-cetanol;(3)batyl alcohol;(4) N- [ 1 --2-hydroxyl--3,7-heptad-ecadienal] -hexadecanamide;(5)1 -0-hexanoyl-glycerol ester;(6)thymine;(7)uracil. Their structures were determined by IR, MS, HNMR, 13CNMR analysis.

从北海佳丽鹿角珊瑚Acropora pulchra乙醇提取液的乙酸乙酯部分分离出七个化合物，经IR、MS、~1HNMR、~(13)CNMR等波谱方法鉴定，其结构分别为：(1)十五酸十七酯，(2)正十六碳醇，(3)鲨肝醇，(4)N-1-羟基甲基-2-羟基—-3，7-十七碳二烯基十六酸酰胺，(5)1-正十六酸甘油酯，(6)胸腺嘧啶，(7)尿嘧啶。

A new compound of merocyanine dye based on fullerene unit (2) was designed, synthesized and characterized by MALDI-TOF, FT-IR, NMR and UV-vis spectra and the allochroic processes were also studied.

并对化合物 2的变色过程进行了研究，发现该化合物对极性溶剂如甲醇、N ，N 二甲基甲酰胺和酸或碱如乙酸、乙醇钠等具有良好的变色过程。

Compound 2 had allochroic processes in polar solvents such as methanol or DMF. Acids or alkali such as acetic acid or NaOC_2H_5 also showed apparent influence on the allochroic process.

并对化合物2的变色过程进行了研究，发现该化合物对极性溶剂如甲醇、N，N-二甲基甲酰胺和酸或碱如乙酸、乙醇钠等具有良好的变色过程。

Phenoxyethanol,Caprylyl Glycol,Sorbic.

胺四乙酸四钠，香精，苯氧乙醇，辛二醇，山梨酸。

In the ammonifying procedure, al cohol is used as solvent or phase transfer catalyst is added. The results sh ow that the reaction time decreases evidently and the yield of bactericide in creases further.

在产品制备的胺化步骤，作者采用乙醇作为溶剂或加入相转移催化剂，明显缩短了合成时间，使产品双烷基二甲基溴化铵的产率得到了进一步提高。

A visual method for the determination of dopamine is described based on the fluorescence emission of a new isoindole compound formed by the reaction between dopamine and o-phthaldialdehyde-β-mercaptoethanol fluorogenic reagent in alkaline medium.

研究发现，在碱性条件下，邻苯二甲醛和β-巯基乙醇组合试剂可与多巴胺发生化学反应生成异吲哚类化合物。

In this thermodynamic study, the minimum requirements in molar fraction of the solvents (x3) on the azeotropic feed plate are: 0.20 for N,N-dimethylformamide, 0.36 for 2-ethoxyethanol, 0.40 for 1-pentanol and 0.66 for butyl propionate,.

在这个热力学研究中，共沸混合物喂料盘上各溶剂摩尔分数最小值(x3)分别是：N，N-二甲基甲酰胺：0.20；2-乙氧基乙醇：0.36；1-戊醇：0.40；丙酸丁酯：0.66。

In this thesis, nano-scale particles of metals, metal sulfides, selenides, oxides and nano-composites of metals/polymer, semiconductor sulfides/polymer have been successfully prepared by γ-ray irradiation technique in sorts of systems including water system, alcohol system, ethylenediamine system, microemulsion and emulsion system at room temperature and under ambient pressure. The possible formation mechanisms of nano-scale materials were suggested, and some factors of affecting the formation of nano-materials were studied.

本论文使用〓Co-γ射线辐射技术，在常温常压下分别于水体系、乙醇体系、乙二胺体系、微乳液和乳液体系中，成功地制备了纳米金属、硫化物、硒化物、氧化物以及金属／聚合物、半导体硫化物／聚合物纳米复合材料，并初步探讨了纳米材料形成的可能机理和影响因素。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失