查询词典 constituents

Results: Fifty-two constituents were isolated from Acorns tatarinowii schott in essential oils and thirty-mine compounds were determined, the content of β-asarone is 83.75%.

结果：从石菖蒲挥发油中共分离出52种成分，鉴定了39种化合物，其中β-细辛醚的含量占了83.75%。

Objective: To study the chemical constituents of marine starfish Asterina pectinifera.

目的：研究海燕的化学成分。

There has not more attractable constituents in this film.

今天向各位推荐一个电影--重锤。

Aromatic constituents of 3 mature starfruit (Averrhoa carambola L.) cultivars, B17, B10 and Singapore Red, were analyzed using HS-SPME-GC-MS method.

采用顶空固相微萃取取法，用气相色谱－质谱联用技术分析了3个杨桃品种成熟果实的香气成分。

The triterpenoid constituents in the extract of Banaba leaves were separated by resinadsorption.

采用树脂吸附法对大叶紫薇叶中的三萜化合物进行了纯化。

Mangrove plant ; Barringtonia racemosa ; Chemical constituents

红树植物；玉蕊；化学成分

The forth part is a review about the progress of studies on the chemical constituents from Belamcanda chinensis and Iris species. Fifty-three compounds were isolated from Rhizoma Belamcandae, the rhizomes of B.

采用正、反相硅胶柱层析、凝胶柱层析、薄层制备及HPLC等各种分离方法，从三种药用植物中共分离出68个不同的化合物，其中61个的结构得得以鉴定，另外4个化合物的结构正在鉴定中，3个由于量少且有点杂质未作进一步的鉴定。

We also studied on the method for simultaneous determination of the contents of 4 active constituents in Bidens parviflora Willd.by Rp-HPLC.Both researches provide quality control method for Bidens parviflora Willd..

也研究了用反相高效液相色谱同时测定小花鬼针草中四种成分的含量的方法，为小花鬼针草药材的质量控制提供了一定的理论依据。

The alkali dosage depends mainly on the constituents and property of material and the quality requirements for pulp: more alkali dosage will speed up cooking process, reduce the hardness of pulp and improve the bleachability of pulp; but excessive alkali dosage will lower the pulp yield and physical intensity, while too less alkali dosage will result in harder and darker pulp, uneasy to bleach, too much screenings, and even extending cooking time cannot guarantee the reaction of delignification.

用碱量主要取决于原料的组成和性质及对纸浆的质量要求：加用碱量有利于加快蒸煮速度降低纸浆硬度和提高纸浆的可漂性：但过高却会降低纸浆得率和物理强度，如过低时，成浆较硬而色暗，不易漂白而且筛渣多即使延长蒸煮时间也难以保证脱木素反应进行。

Chemical constituents in ethyl acetate fraction of alcoholic extract from the flower of Bombax malabaricum DC .

采用GC-MS对木棉花醇提物乙酸乙酯溶解组分的化学成分进行了研究，共鉴定出46种成分。

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。