The method of using hydrostatic principle to improve technology for extracting nicotine sulfate was described.

本文论述了利用流体静力学原理对硫酸烟碱的提取工序进行工艺改造的方法.

期刊摘选

The true alkaloid nicotine in Nicotiana functions as an allomone against many insect species.

烟草属中的真生物碱,烟碱作为利已激素,能防治许多昆虫.

辞典例句

Only a very few Mallard reaction compounds had significant correlations with nicotine and total nitrogen.

糖和氨基酸棕色化反应产物仅个别成分与烟碱和总氮含量显著相关.

期刊摘选

By measuring the nicotine content among the tabacco leaf in the different areas.

通过对不同地区烟叶中烟碱含量测定发现,烟碱含量相差甚远.

期刊摘选

Important examples in human use are quinine, nicotine, atropine, opium, morphine, codeine, and strychnine.

人类广泛应用的生物碱有奎宁, 烟碱, 阿托品, 鸦片, 吗啡, 可待因等.

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The adrenoceptor antagonist phentolamine blocked the analgesia induced by nicotine injection.

烟碱引起的镇痛效应可被肾上腺素受体拮抗剂酚妥拉明部分阻断.

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Thiamethoxam is a highly active insecticide as if new nicotine compound.

噻虫嗪是一种具有优异活性的类似于新烟碱类化合物的杀虫剂.

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After that, the nicotine content decreased with leaf age.

中 、 下三个部位的烟碱与烟叶钾含量均呈负相关关系.

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The correlation between potassium and nicotine content of leaves were negative.

这说明在烟叶的全生育期内,烟叶钾含量增加时,烟碱含量是减少的.

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The amount of nicotine in these substitutes can excite the heart.

这些替代品中的烟碱含量足以刺激心脏。

金山词霸