查询词典 precursor
- 与 precursor 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The results showed that:(1) Many proliferating cells were distributed unevenly in the ventricular zone of telencephalon, and the [3H] labeled cells were found to be populated in the lateral ventricular zone of neostriatum at brain level L12~L14,forming proliferation "hot spots";(2) Having underwent mitosis twice, the proliferative cells in the VZ began to migrate laterally 6 days after intramuscular injection of [3H] thymidine, and these migrating precursor cells terminated at their targets and differentiated into new neurons on the 30th day.
结果发现:①端脑室带区中存在不均匀分布的[3H]标记细胞,大量标记细胞分布在端脑尾侧新纹状体水平(L1~L14)的VZ,形成标记细胞的&热点&区;②标记细胞经两次有丝分裂后,大约在肌肉注射[3H]的第6天后开始从VZ向外迁移,在30天左右到达目的脑区并分化成为成熟神经元。
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Neural stem cells are the common precursor cell of neuron and neuroepithelial cell.
神经干细胞是神经元和神经胶质细胞的共同前体细胞。
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Films of carbon nanofibers have been grown on the block-type CNTs substrate impregnated with an aqueous nickelous nitrate solution as catalyst precursor.
通过在碳纳米管孔隙中浸润镍基溶液,在气相生长的条件下,在压制体表面生长出碳纳米纤维薄膜。
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This experiment demonstrated that the trinuclear compound is an excellent precursor for NiFe〓O〓 nanoparticle.Ⅲ.
实验显示这种三核化合物〓是一种很好的制备NiFe〓O〓纳米颗粒的前提物。Ⅲ。
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The small size pure NiFe〓O〓 nanocrystals were successfully synthesized by solvothermal reaction with 〓 as precursor.
以〓为前体物,利用溶剂热反应成功制备了纯的NiFe〓O〓纳米晶粒。
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The effect of the size of alumionphosphate precursor, ammonia flow and nitridation temperature on preparation of AlPON were investigated.
考察了磷酸铝颗粒度、氨流量和氮化温度对氮化磷酸铝制备的影响。
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Nornicotine is produced by the N-demethylation of nicotine during the post-harvest treatment of tobacco leaves.Nornicotine in tobacco serves as the precursor in synthesis of the well-characterized carcinogen N'-nitrosonornicotine, one of the tobacco-specific nitrosamines, and consequently damages the health of tobacco smokers and passive smokers.
烟叶的采收后处理和加工过程中,大量的尼古丁经去甲基化作用生成了去甲基尼古丁,后者是烟草特有的亚硝胺类(tobacco-specific nitrosamines, TSNAs)致癌物——亚硝基去甲基尼古丁(nitrosonornicotine, NNN)的前体,与人类健康息息相关。
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The aim of this paper is to synthesis the flavor precursor of olefine aldehyde which can be used in tobacco flavoring.
本文主要研究缩醛类烟用香料前体化合物,以解决普通烟用香精由于易挥发而造成卷烟品质不稳定的问题。
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Thus, in order to attain acetal can be used as precursor of its matrix olefine aldehyde, 2-undecental glycol acetal was synthesized, and the corresponding optimum reaction conditions as: 2-undecental 0.2mol, glycol 0.3mol, cyclohexane as solvent, catalysed by vitamin C, the optium reaction time was 6h, its reaction yield could reach over 77.25%.
为了进一步探求效果更理想的前体化合物,本文继续合成了2-十一烯醛乙二醇缩醛,通过单因素优化实验得到最佳反应条件为:环己烷作溶剂,VC作催化剂,用量0.42%,醛醇物质的量之比0.2:0.3,反应时间6h,此条件下产品收率达77.25%。
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Silica sol without ethanol was prepared with tetraethyl orthosilicate as precursor.
以硅酸乙酯为水解前驱体,制备了有机硅水溶胶体系。
- 推荐网络例句
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I didn't watch TV last night, because it .
昨晚我没有看电视,因为电视机坏了。
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Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.
今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。
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I'm running my simile to an extreme.
我比喻得过头了。