查询词典 aromatic

Reactions of 5-amino-lH-pyrazoles with aromatic and aliphaticα-bromoacetophenones, followed by acid-mediated iminative cyclization and the ensuing tautomerization, produced methylthio-imidazolo[1,2-b]pyrazoles 6a-6g.

咪唑并[1，2-b]吡唑甲硫醚类化合物经过室温下H_2O_2/CH_3COOH温和氧化，得到咪唑并[1，2-b]吡唑甲基亚砜类化合物7a-7g。

Polycyclic aromatic hydrocarbons have already been verified into hydrocarbons with "mutagenesis, carcinogenesis and teratogenesis".

多环芳烃是指两个或者两个以上的苯环连在一起的一类化合物。

Anti-knock additive tetraethyl lead,vapor pressure,cetane number and content of aromatic hydrocarbon,ethylenes,sulfur and oxides respectively in the motor fuel are more detailedly analysed in regard to their effect on motor vehicle exhaust emission.

较为详细地分析了燃油中四乙铅抗爆剂、芳烃含量、烯烃含量、硫含量、蒸气压、十六烷值及含氧化合物等对汽车排放的影响，并简述了其发展趋势。

Eight novel N,N′-naphthalene acyl substituted aromatic acylamino thiocarbamide s(Ⅱ1~Ⅱ8) were synthesized from aryl acylhydrazine and α-naphthalene acyl isothiocyanate, which was obtained by the reaction of potassium thiocyanate with α-naphthalene acyl chloride obtained from 2-naphthylacetic acid and thionyl chloride in anhydrous benzene.

通过α-萘乙酸和SOCl2在无水苯中反应制得α-萘乙酰氯，与硫氰酸钾反应生成α-萘乙酰基异硫氰酸酯，再与芳基酰肼进行加成反应，合成8种新型N，N′-萘乙酰基取代芳乙酰胺基硫脲类化合物(Ⅱ1～Ⅱ8)。

Products include: high boiling point products, solvent series, plasticizer series, aromatic hydrocarbon series, Zhong propyl butyl-carbinol, 2- octanone and thiophen.

公司主要产品有：高沸点溶剂系列、增塑剂系列、芳烃系列、仲辛醇、2-辛酮及噻吩等产品。

Hook, and it has a-pinene, a -cedrene, a-terpineol, B-caryophyllene oxide etc,they have strongly aromatic- muskiness-perfume. It was designed to toilet powder , puff cake and rouge in cosmetics and soap, it has been to append fantastic essence by directly application.

杉术精油主要成分是柏木醇，其含量占精油70％左右，其余还有α-蒎烯、柏木烯、揽香烯、α-松油醇、β-石竹烯等，有强有力的木香-麝香-龙诞香香气，主要用于爽身粉、粉饼、胭脂等脂粉类化妆品和皂类，还可适于配入幻想型香精中。

The chemoselectivity of the reaction is noteworthy, as the presence of a halide on the aromatic ring furnishes the triazole 5 as the sole reaction product.

值得注意的化学反应的，作为一个在场的卤化物的芳香环唑5作为唯一证据的反应产物。

As suitable solvents for applying a coloring substance which is, eg, a triphenylmethane dye, organic liquids such as aliphatic alcohols, ketones, esters and aromatic hydrocarbons can be used.

至于申请一着色物质，例如，一三苯甲烷染料，如脂肪醇，酮，酯和芳香族碳氢化合物有机液体可以使用合适的溶剂。

The efficacy of aromatic diamidines in the treatment of protozoal diseases was first recognized in the 1930s by investigators searching for agents with therapeutic activity against African trypanosomiasis .

早在1930年，人们在寻找治疗非洲锥形虫症药物时首先发现了芳香二脒类化合物具有治疗原虫疾病的作用，临床试验表明戊烷脒及其类似物对非洲人早期锥形虫症和黑热病具有疗效。

Aromatic tuberose is coupled with hints of sandalwood and sweet tree moss.

晚香玉與檀香木和甜樹苔的結合掀起了夜的神秘。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"