查询词典 aromatic

Six kinds of phenyl hydrazone s were synthesized by the reaction of ice bath using aromatic dia- zonium salt and active methylene compounds.

在冰盐浴条件下，芳香族重氮盐与活泼亚甲基化合物反应，合成了六种新芳香族腙类衍生物。

A novel application of hydrolase as catalyst for the addition of diethylzinc to aromatic aldehydes is reported. Optimum conditions were screened out.

报道了水解酶催化二乙基锌与芳香醛的加成反应，对反应条件进行了优化。

In chapter 3, Fe-EDTA chelate-induced aromatic hydroxylation of terephthalate as a new method for the evaluation of hydroxyl radical-scavenging ability was studied.

第三章利用Fe-EDTA引发对苯二甲酸芳环羟基化反应建立了一种评价抗氧化剂清除·OH能力的新型荧光分析法。

In continuation of previous experiments ,the reaction of aromatic aldehydes with t-butyl hypochlorite was studied.

在前一试验的继续中，有t-丁基次氯酸盐was的芳香的醛的反应学习。

In addition, the company marketing the world of high-quality insulating materials, such as the United States DuPont's polyester film, aromatic amines-washing paper, film-washing imine and composite products NMN, NHN and From the United Kingdom, South Korea, Japan, China's all kinds of insulation materials and industrial belt, I can according to customer's company, to provide the goods at the cutting and processing services.

此外，公司还经销世界各国的各种优质绝缘材料，如美国杜邦公司的聚酯薄膜，芳香聚洗胺纸，聚洗亚胺薄膜及复合产品NMN，NHN以及来自英国，韩国，日本，中国的各种绝缘材料和工业胶带等，同时我公司还可根据客户要求，提供上述货品的分切和加工服务。

Distribution coefficients, separation factors and selectivity were evaluated for the immiscibility region, and their connections with temperature and the concentration of aromatic hydrocarbon were studied respectively.

Othmer-Tobias和Bachman方程对三元体系相平衡实验数据关联的结果表明实验数据具有较好的一致可靠性。2、N-甲酰吗啉抽提性能研究。

The most expensive one,"Dongguan Fair Aromatic", was made of the roots of incense tree dug from the sand and hillside land by local women. They saved the best roots as private savings and then sold them to foreign spice dealers.

最名贵的叫"东莞女儿香"，是当地妇女在沙土山田中把古蜜香树的树根凿出来，拣最好的树根贮集起来作为私蓄，然后卖给外来香贩的。

There are three categories of maturity indicators of organic matter in current petroleum industry to evaluate the degree of thermal evolution for source rocks, including: 1 optical indicators, i.e., vitrinite reflectance, bitumen reflectance, sporopollen color and thermal alteration index, conodont color alteration index, and reflectance of fossil fragments; 2 chemical indicators, i.e., the maximum temperature in pyrolysis of organic matter, methyl phenanthrene indicator, the atomic ratio of H/C, carbon isotope indicator, and biomarker indicators; 3 indicators of spectroscopy, i.e., the free radical concentration of kerogen, the average structural scale of aromatic nucleus of kerogen, and the laser-Raman spectrum of organic carbon.

摘 要：当前常用的有机质成熟度指标包括3大类：1 光学指标，包括镜质体反射率、沥青反射率、孢粉颜色、热变指数(thermal alteration index， TAI)、牙形石色变指数(color alteration index， CAI)和生物碎屑反射率；2 化学指标，包括有机质最大热解峰温度、甲基菲指数(methyl phenanthrene indicator， MPI)、H/C原子比值、碳同位素指标和生物标志物指标；3 谱学指标，包括干酪根的自由基浓度、干酪根芳核平均结构尺寸和有机碳激光拉曼光谱。

A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; a selectivity control agent comprising at least one silicon containing compound containing at least one C1-10 alkoxy group bonded to a silicon atom, and one or more activity limiting agent compounds comprising one or more aliphatic or cycloaliphatic carboxylic acids; alkyl-, cycloalkyl- or alkyl-ester derivatives thereof; or inertly substituted derivatives of the foregoing.

一种用于丙烯聚合的催化剂组合物，所述催化剂组合物包括：一种或多种齐格勒-纳塔主催化剂组合物，该主催化剂组合物包括一种或多种过渡金属化合物和一种或多种芳族二羧酸酯内部电子给体；一种或多种包含铝的助催化剂；选择性控制剂，该选择性控制剂包括至少一种包含硅的化合物，该化合物包括至少一种与硅原子连接的C 1-10 烷氧基；和一种或多种活性限制剂化合物，该活性限制剂包括一种或多种脂族或脂环族的单或聚羧酸类、其烷基-、环烷基-或烷基-衍生物、或上述惰性取代的衍生物。

Have a meal, the rice is not aromatic; drinks tea, tea insipidity.

吃饭，饭不香；喝茶，茶无味。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切