查询词典 formula weight

These two fractions appear to correspond to different carbohydrates of high molecular weight and formula (C6H10O5)n.

这两种不同成分对应不同的高分子量和分子式为(c6h10o5)N的碳水化合物。

Searching - Every field in a record, including chemical structure, molecular formula and molecular weight are searchable.

搜索-在各个领域的纪录，包括化学结构，分子式和分子量是搜索。

With these characteristic ions in the HRFABMS spectra,the molecular weight and formula of this kind of compounds could be obtained easily.

将 EIMS和 FABMS结合起来可以快速准确地获得化合物的分子量、分子式以及相关的取代酰基等结构信息。

METHODS The structures of compound I, extracted from Clausena lansium Skeels, and synthesized compound III were determined by single crystal X-ray diffraction analysis. The stereo-structures of compound II and IV were also built up through Tripos force field based on crystal structures of compound I and III. RESULTS The molecular formula and molecular weight were found to be C18H17O2N and 279.34 respectively.

方法用单晶X-射线衍射分析法测定了从植物黄皮提取物中分离得到的化合物I和采用合成方法得到的化合物III的晶体结构，并用分子力学计算方法分别模建化合物II和IV的立体结构。

There is a wealth of data to which the allometric formula has been successfully applied, including measurements of length, volume, weight, and chemical proportions (Needham, 1964) during development.

有一个异速生长的公式在发展期间已经被成功使用大量数据，包括长度的尺寸，体积，重量和化学比例(尼德姆，1964)。

With C.praecox var concolor as the tested material, 3 kinds of medicaments as Penicillin (700, 900, 1 100 mg/L), AgNO3 (102, 136, 170 mg/L) and 8-HQ (50, 70, 90, 200 mg/L) were used to make the orthogonal test, the fresh-keeping formula that was suitable for cutting-flower of C. praecox was screened and 5 indexes of fresh weight of flower shoots, water balance, blooming rate, soluble sugar content and protein content of C. praecox were determined.

方法］以素心腊梅为试材，以青霉素(700、900、1 100 mg/L)、硝酸银(102、136、170 mg/L)8-羟基喹啉(50、70、90、200 mg/L)3种药剂不同浓度进行正交试验，筛选适于切花腊梅保鲜剂配方，测定切花腊梅的花枝鲜重、水分平衡值、开花率、糖及蛋白质含量5个指标。

This article describes that the contrast tests on the subgrade filled with natural sand-gravel was conducted with portable falling weight deflectometer and Benkelman beam,respectively,the correlation analysis on the modulus from the above tests was conducted and the empirical formula was obtained.

对填料为天然砂砾的路基用便携式落锤弯沉仪与贝克曼梁进行了对比试验，将便携式落锤弯沉仪所得模量与贝克曼梁弯沉进行相关分析，并得到经验公式。

In this way a new research model:frequent structure vector model derived the expression of document structure vector and weight function and constructed the calculate formula to measure similarity of the two documents. In order to improve the efficiency of mining frequency subtrees in a forest reformed the algorithm TreeMiner from data structure and miner procedure to fit to minning structure in large documents.

该方法架构了一个新的检索模型—频繁结构向量模型，给出了文档的结构向量表示和权重函数，构造了XML文档结构相似度量计算公式；同时从数据结构和挖掘程序上对TreeMiner 算法进行了改进，使其更适合大文档数据集的结构挖掘。

A weighted Hausdorff distance image matching algorithm based on extracting bifurcating points on feature image is proposed. The corresponding weight formula is also put forward.

提出了一种基于特征图像分支点提取的加权Hausdorff距离图像匹配算法，并给出了相应的权值求解公式。

And it modifies the formula of weight of feature. The result of experiment shows the precision is improved.

实验结果表明改进后的特征加权公式取得了较高的分类准确率。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。