成分的

The central part of the ring structure may be either carbide with a high W content or carbonitride with a high Ti content.

环状结构心部可以是以钨等重金属元素为主要成分的碳化物，也可以是以钛为主要成分的碳化物和碳氮化物。

This text is the first one to report the preliminary test for the chemical components in the leaves of Carya cathayensis and C.

首次报道山核桃叶和美国山核桃叶化学成分预试验，有利于对其有效成分的提取、分离、纯化研究，为今后深入研究与开发利用该资源提供一定的研究基础。

The results also showed there were anti-microbial active material in the leaves of Cichorium intybus and founded a base on the research and application.

表明菊筐叶中存在抑菌活性成分，补充了菊苣抑菌活性的研究内容，为该种植物抑菌活性成分的研究和应用奠定基础。

Results: Fifty volatile compounds of Dracocephalum moldavica L. were identified, and the relative contents of Citral is the highest (31.43%). The second and the third are n-Hexadecanoic acid (16.48%) and geraniol ester (9.02%) respectively. It indicated that Dracocephaluin moldavica L. could be served as an important material for making lemon spice.

结果：鉴定出51种成分，其中柠檬醛含量较高，占总挥发性成分的相对含量为31.43%，其次为棕桐酸(l6.48%)及香叶醇乙酸酯(9.02%)，提示其可以作为制备柠檬香系香料的重要原料。

It was evidently that the endophytic fungi of C. hainanensis are potential resources to find valuable bioactive components.

这表明海南粗榧内生真菌是寻找有价值的生物活性成分的潜在资源，其生物活性成分值得进一步研究。

The research aimed to study the extraction of effective components from Nepeta pratti Lèvl by supercritical CO2, and provide the basis for exploring a best extractible method and analyzing the extracts accurately.

［目的］利用超临界CO2萃取方法提取康藏荆芥中的有效成分，为找出康藏荆芥中有效成分的最佳提取方法并对提取物进行准确分析奠定基础。

Then the utilization solvent parting method, low pressure silica gel separation method and so on column chromatograph, opposition silica gel, glucosan gelatin chromatograph, pocket resin, carries on the chemical composition to the effective spot the system separation; The chemical composition obtains which to the separation carries on the structure appraisal with four big spectra.

然后运用溶剂分离法、低压硅胶柱色谱、反相硅胶、葡聚糖凝胶色谱、大孔树脂等分离手段，对有效部位进行化学成分的系统分离；对分离得到的化学成分用四大光谱进行结构鉴定。

The chemical constituents of extracts of Tamarindus indica L were determined by GC-MS. The relative contents of constitutes were determined by area normalizing method. 48 compounds were identified, amounting to total mass fraction 98.5%. The main compounds were 5-methyl-2(3H)-furanone, diethyl succinate, furfural, hexadecanoic acid, linolenic acid, 5-methylfurfural, oleic acid, linoleic acid, etc.

并利用气相色谱仪-质谱仪对罗望子萃取物的化学组成进行了分析鉴定，并用面积归一化法测定了各种成分的质量分数，共鉴定了48种成分，占总质量分数为98.35%，其中主要成分为：5-甲基-2(3H)-呋喃酮、丁二酸二乙酯、糠醛、十六酸、亚麻酸、5-甲基糠醛、油酸、亚油酸等。

The formation of hydrochemistry ingredient is primarily leaching and dissolving, and the trace element ingredient is rich, which reflect that the groundwater passed through a long and complex runoff process cycle.

水化学成分的形成以溶滤、溶解作用为主，微量元素成分丰富，反映了地下水经过了漫长和复杂的径流及深循环过程。

The application of ionic liquids aqueous solutions as solvents in the microwave-assisted extraction technique was developed for the extraction of lycorine, lycoramine and galanthamine from Lycoris. Effects of different ionic liquids and the concentration of selected ionic liquids on MAE were investigated, and tradition organic solvent and extraction techniques were compared.

1引言自1986年Ganzler等[1]首次报道采用微波辅助萃取天然产物中化学成分以来，微波辅助萃取技术在食品、环境和天然产物等领域得到了广泛的应用[2~5]，它以萃取时间短、溶剂用量少、选择性强、萃取效率高等优点在中药有效成分的萃取分离方面得到广泛关注[5，6]。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。