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- The structure of the indolizine and nitrogen heterocyclic naphthoquinone derivative is shown as a formula (I). 中氮茚并氮杂萘醌衍生物的结构如式(I)所示。
- By Hull cell test, a kind of anion surfactant and nitrogen heterocyclic compound was chosen as a additive for pulse non-cyanide silver electroplating. 采用赫尔槽试验筛选出一种阴离子表面活性剂及含氮杂环化合物作为脉冲无氰镀银的添加剂,并初步确定了无氰镀银的工艺条件及脉冲条件。
- In this paper, two unsaturated alicyclic nitrogen heterocyclic crownethers were synthesized by phase transfer reaction . 采用相转移催化反应合成了两个不饱和脂环氮杂冠醚。
- The present invention discloses an indolizine and nitrogen heterocyclic naphthoquinone derivative, a preparation method and an anticancer application thereof. 本发明公开了中氮茚并氮杂萘醌衍生物及其制备方法与抗癌应用。
- Structute of nitrogen heterocyclic ring quaternary ammonium salt cationic surfactants was identi fied by mass spectrography, nuclear magnetic resonance spectra,infrared spectra and etc. 用质谱法、核磁共振波谱法、红外光谱法等，确定了未知氮杂环季铵盐型阳离子表面活性剂的结构。
- The inorganic additives are soluble metal compounds,and the organic additives are nonionic surfactants,polyamine compounds,nitrogen heterocyclic compounds,sulfur compounds,amino acid compounds,et... 无氰镀银通常采用的无机添加剂主要是可溶性金属化合物,有机添加剂主要是非离子型表面活性剂、聚胺类化合物、含氮杂环化合物、含硫化合物和氨基酸化合物等。
- nitrogen heterocyclic containing aryl ligand 芳-氮杂环配体
- Aim Synthesis of nitrogen heterocycle ferrocenesulfonyl amide was studied. 目的 研究氮杂环二茂铁磺酰胺类化合物的合成。
- Development on Nitrogen Heterocyclic Energetic Compounds 氮杂环含能化合物的研究进展
- The Investigation about the Reaction of Nitrogen Heterocyclic Compound 氮杂环化合物的反应研究
- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- nitrogenous heterocyclic compound 氮杂环化合物
- Synthesis and Characteristic of Unsaturated Alicyclic Nitrogen Heterocyclic Crownethers 不饱和脂环氮杂冠醚的合成和结构表征
- Synthesis and characterization of novel soluble polyamides containing nitrogen heterocyclic ring 新型含氮杂环可溶性聚芳酰胺的合成及表征
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- Study on Anoxic Biodegradation Mechanism of Several Nitrogen Heterocyclic Compounds in Coal Coking Wastewater 焦化废水中几种含氮杂环化合物缺氧降解机理
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- Keywords coordination polymer;the ligands of nitrogen heterocyclic ring;crystal structure;spectroanalysis; 关键词配位聚合物;含氮杂环类配体;晶体结构;光谱分析;
- Keywords pyrazole;nitrogen heterocyclic rings;fungicidal activity;insecticidal activity; 吡唑;含氮杂环;杀菌活性;杀虫活性;
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
