芳香的

They are sometimes difficult to differentiate from aromatic or olefinic absorptions.

有时它们就难于和芳香族或烯烃的吸收峰相互区别。

Chapter 3 The imine salt is formed initially by the addition of an organolithium compound to the aromatic nitrile. This type of reaction usually leads to cyclic products.such as triazines.

第三章研究发现有机锂化合物LiCH_2[SiMe(NMe_2)_2]与芳香腈(如苯腈、邻甲基苯腈、间甲基苯腈)反应，可以得到2，4，6-三取代均三嗪，这是一种该类均三嗪的简单有机合成方法。

The semi-aromatic polyamide containing oxazole ring of the invention has the advantages of easy processing and high heat-resistant temperature.

本发明含唑环半芳香聚酰胺具有易加工和耐热温度高的优点。

Flowers small, bisexual, 5-merous, white, fragrant, sessile to shortly pedicellate.

花小，两性的，5基数，白色，芳香，无梗到短有花梗。

The yield reached 67.0% The medicinal and pesticidal activities of a part of the compounds have been measured .

在进行氨基酰化时，论文克服了该类嘧啶环上4位氨基在常规条件下不与芳香类和带有强吸电子基如三氯乙酰基酰化试剂发生反应的困难，通过采用在强碱性条件下进行酰化，得以成功。

Escherichia coli and many other microoganism synthesize aromatic amino acids through the condensation reaction between phospho enolpyruvate and erythro.

ppsA和tktA是芳香族氨基酸生物合成中心途径的两个关键酶基因，在大肠杆菌中，ppsA基因编码磷酸烯醇式丙酮酸合成酶A ，该酶催化丙酮酸合成磷酸烯醇式丙酮酸；tktA基因编码转酮酶A ，该酶在磷酸戊糖途径中生成 4 磷酸赤藓糖起主要作用。

Several polynuclear aromatic hydrocarbons, many found in cigarette smoke, are potent carcinogens.

答：在香烟中发现多种多环芳香化合物，它们是致癌的物质。

During temperature-programmed combustion, the evolution sequence of different sulfur forms is aliphatic sulfur, aromatic sulfur and pyritic sulfur, thiophenic sulfur and sulfatic sulfur.

2大同煤各形态硫燃烧逸出的基本顺序为：脂肪硫，芳香硫和黄铁矿硫，噻吩硫和硫酸盐硫。

Anthraquinone dye can be broken-down anaerobically in this way: Anthraquinone is first reduced to quinhydrone, and then hydrolyzed into aromatic acids, which are degradable anaerobically or aerobically.

4蒽醌染料的厌氧降解，可能是蒽醌先还原为醌氢醌，然后水解开环生成芳香酸。

Dourthe-owned Chateau de Sérame echoes this ?reporting good acidity and fine aromatic intensity in its whites, with abundant freshness and moderate alcohol levels.

拥有德萨庄园的 Dourthe 回应了这份报告，说白葡萄酒酸度良好，芳香浓郁，新鲜，酒精度适中。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。