查询词典 derivative

In this paper, synthesizing bis-(tert-butyldimethylsiloxy) silicon porphyrin by derivative reagent, makes porphyrin readily amendable to GC-MS、 GC-IRMS ananlysis.

本文利用衍生化的方法合成双—硅卟啉，使其适合GC-MS、GC-IRMS测定。

Two: Synthesized a novel rhodamine derivative with a single amidogen, then analyzed and characterized the dye by 1H NMR and EI-MS.

二、以对硝基苯甲醛和八羟基久洛尼定为原料，合成了一种新型的罗丹明荧光染料，并通过核磁共振、质谱等手段对染料结构进行了表征。

Starting form chitosan,amidogen protecting,cross linking,etheration,amination,amidogen release and addition reaction with CS_2,and chitosan derivative containing dithiocarbamate group was firstly prepared.

本文在课题组前期关于淀粉改性重金属捕集剂研究工作的基础上，参考国内外的相关文献，建立了以壳聚糖为主要原料制备二硫代氨基甲酸改性壳聚糖重金属捕集剂的合成工艺。

A ratio spectra derivative spectrophotometry for simultaneous determination of quaternary mixture of aminopyrine, phenobarbital, caffeine and phenacetin was studied.

提出了可应用于四元混合体系同时测定的比光谱-导数分光光度法，阐述了该方法的基本原理，并将其应用于氨基比林、苯巴比妥、咖啡因和非那西丁四元混合体系中各组分的同时测定。

Here we show that a TH derivative, triiodothyroacetic acid, induces metamorphosis in the cephalochordate amphioxus.

科学家通过研究发现，甲状腺激素的衍生物，一种叫做TRIAC的物质，在头索动物文昌鱼中诱导了变态。

Three analysis methods were used in this study to analyze the content of amygdalin , and the effective components in bitter apricot kernel, namely, HPLC method, UV-Spectrophotometric method and Second-derivative spectra method.

苦杏仁的有效成分苦杏仁苷经提取、处理后，用HPLC法、紫外分光光度法、二阶导数光谱法测定其含量。

We show that a 1-D signal and its derivative at different scales can be represented by one analytic function defined on the unit disc in the complex plane.

我们证明一个一维信号及其微分在所有尺度下可以用复平面上的单位圆上的解析函数来表示。

NS equation ; rotation ; rolling moment ; roll angular velocity ; roll-damping moment coefficient derivative

NS方程；旋转；滚转力矩；滚转角速度；滚转阻尼力矩系数导数

Mean angular acceleration and the increment of angular coordinate as well as the first and second derivative of angular with respect to time is not only the physical quantities which often being used but also important physical quantities.

无限小角位移、有限大角位移、角速度、平均角速度、角加速度、平均角加速度和角坐标的增量以及角坐标对时间的一阶和二阶导数不仅是物理学中常用的物理量，而且也是很重要的物理概念。

Toosendanin, a triterpenoid derivative isolated from the bark of Melia toosendan Sieb et Zucc, has been as an anthelmintic vermifuge against ascaris for more than 50 years in China.

川楝素（Toosendanin，TSN，〓，FW 574）是一种从楝属植物川楝的根皮中提取的化合物，是传统中药中用于驱蛔的川楝的有效成分。

His female bullfighter Lydia gradually Health love, but she was in a vegetative state after the Bulls Zhuangcheng away from her, just because Lydia's ex-boyfriend showed more affectionate than he is like love.

他对女斗牛士莉迪亚渐生爱意，却在她被公牛撞成植物人后离她而去，仅仅因为莉迪亚的前男友表现出好似比他更深情的爱。

I know of none which are not easy to answer, but what I am trying to do now is only by a series of hints to throw some light on the narrow path of legal doctrine, and upon two pitfalls which, as it seems to me, lie perilously near to it.

我不认为有什么难以回答的问题，但我现在要做的仅仅是通过一系列线索，来给法律理论的狭窄路径以及在我看来离它近得危险的两个陷阱提供一些启示。