查询词典 derivative

They buy mortgages from banks, after, and other derivative products after binding to the form of securities sold to investors around the world.

它们从银行购买房贷，经过和其它衍生金融产品捆绑之后，以证券的形式出售给世界各地的投资者。

We applied ATR Fourier Transform Infrared spectra and second derivative spectra to analyze the alcoholicity and content of sugar of red wines produced by different manufacturers for the first time.

首次采用衰减全反射傅里叶变换红外光谱法并结合二级导数谱对市售的若干种不同厂家葡萄酒的酒精含量和糖含量进行了快速无损分析。

The research results showed that the alcoholicity of derivative sugar from hemicellulose would be 40g/L (over 90％ of the theoretical output)after 48 hours′ fermentation with addition of some nutritional component.

试验研究表明，半纤维素衍生糖补充一定的营养成分，经过48h发酵，乙醇浓度可达40g/L，是理论产率的90％以上。

Put the discrete algebraic equations of initial derivative conditions and algebraic equation system of governing differential equation together to form a new algebraic system.

采用重心Lagrange插值近似未知函数，推导了未知函数各阶导数微分矩阵的显式表达式，建立了求解二阶常微分方程初值问题的重心Lagrange插值配点法。

It can turn the alkane into the alcohol and the alkene into the derivative of ethylene oxide in air at room temperature by its catalysis.

该项研究不仅有助于人们了解细胞色素P-450的催化机理，而且在有机合成和医学上将具有广泛的应用前景。

Novel chitosan derivative with long alky groups as the hydrophobic moieties and carboxymethyl groups as the hydrophilic moieties was synthesized. The chemical structure of N-octyl-O, N-carboxymethyl chitosan was characterized via FTIR, 1H NMR and elemental analysis. The physical properties were analyzed with wide angle X-ray diffraction and differential scanning calorimetry.

以天然可生物降解的壳聚糖为原料，通过在壳聚糖6位羟基上引入羧甲基，在2位氨基上引入疏水烷基链，制得N-辛基－O，N-羧甲基壳聚糖两亲性衍生物，分别用FTIR、1H NMR和元素分析等技术对其结构进行表征，用广角X射线衍射和差示扫描量热法对具物理性质进行分析，并考察其在各种溶剂中的溶解性能及其对难溶性药物的增溶能力。

Alkylamine reaction with dialkyl cyanodithioiminocarbonate was catalyzed by quaternary ammonium salts at room temperature to yield 3-alkylamine-5-amino-1,2,4-triazole in good quality and high yields. After imidization and reaction with an α,β-unsaturated acid derivative, the reaction intermediate was hydrolyzed in the presence of a Lewis acid to obtain the target product.

烷基胺与氰基亚胺硫代二甲酯在季氨盐催化作用下得到质量好、收率高的3-烷氨基-5-氨基-1，2，4-三氮唑，进一步经过亚胺中间体并与α，β-不饱和酸酯作用后，中间产物在Lewis酸催化作用下水解得到三唑嘧啶酮。

Allantoin is one of the important urea derivative products.

尿囊素是一种重要的尿素衍生产品。

It wasn't until the mid-sixties that the true entheogenic compounds of Amanita muscaria were positively identified as ibotenic acid and muscimol, its decarboxylised derivative.

直到上月中旬， 60岁的真实entheogenic化合物鹅膏muscaria呈认定为鹅膏蕈酸和蝇，其衍生decarboxylised 。

Amaranth's derivative defaults had trivial systemic ripples, while those of Lehman and AIG created major shockwaves.

Amaranth衍生品违约所带来的系统性影响微不足道，而雷曼和美国国际集团的违约则造成了重大的冲击波。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。