It is difficult to set down an exact formula because cork is a natural product.

要确定脱模剂的精确配方是困难的,因为软木是一种天然产物.

辞典例句

Saponins and flavonoid glycosides have been found widely in natural products.

皂甙和黄酮甙广泛存在于天然产物中,它们是许多中草药的活性成分.

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This paper reviews the research development of natural product against Helicobacter pylori.

本文就天然产物抗幽门螺杆菌感染研究现状作一综述.

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Some basic problems and biogenesis on natural products research were analysed.

分析了天然产物研究中的基本问题和生源研究.

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Betulin and betulinic acid are remarkable natural products.

白桦脂醇和白桦脂酸是非常有价值的天然产物.

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Lycopene products include synthetic compound and natural product.

番茄红素产品包括人工合成品和天然产物两类.

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The chemistry of ascidians has become one of the most active fields of marine natural products.

海鞘的生理活性物质是海洋天然产物化学中引人注目的研究领域之一.

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The application of HPLC - NMR in drug metabolism, natural products analysis and food analysis were reviewed.

综述了目前HPLC-NMR联用技术在药物代谢研究, 天然产物分析以及食品分析等方面的应用.

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Combinatorial chemistry is now playing important role in the research of the natural products.

组合化学技术在天然产物的研究中起著越来越重要的作用.

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The synthesis of natural products with biological activity is an important way to develop new medicines.

具有生理活性天然产物的合成是发现新药的重要途径.

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This paper reviews the present state of application of D - mannitol in the synthesis of natural products.

介绍了甘露醇作为手性材料在具有重要生理活性天然产物合成中的应用概况.

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How to extract and separate alkaloids from natural products have drawn the attention of many people.

如何从天然产物中提取与分离生物碱,吸引了人们的广泛关注,其提取与分离方法也不断地改进和发展.

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Method Topotecan hydrochloride was synthesized from camptothecin by improved hydrogenation oxidation and the Mannich reaction.

方法以天然产物喜树碱为原料,经氢化还原、化制得中间体10羟基喜树碱,再与双(甲氨基)烷反应制备盐酸拓扑替康.

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Tannic acid , a typical vegetable tannin, is a very valuable natural product used for wild fields.

单宁酸属水解类单宁, 是具有重要开发利用价值的天然产物.

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This review summarized examples of natural product - based libraries published in the past five years.

本文综述了近5年来报道的组合合成天然产物衍生物化学库的一些例子.

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