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- The hydroxides of the alkali metals are strongly alkaline. 碱性金属的氢氧化物有很强的碱性。
- Francium is the densest of the Alkali Metals and also radioactive. 钫是碱金属中密度最大的,具有放射性。
- All the alkali metals have a single s-electron outside a closed shell. 所有的碱金属都在闭合壳层之外有一单个S电子。
- The free alkali metals react immediately with water to liberate hydrogen. 游离的碱金属直接和水中作用,放出氢气。
- "Potassium: Chemical element, one of the alkali metals, chemical symbol K, atomic number 19. 钾:一种碱金属化学元素,化学符号k,原子序数19。
- Based on the characteristics of biomass fuel, this article summarizes the sources of alkali metals in biomass and the elutriation and migration. 摘要在明确了生物质燃料特点的基础上,对生物质中碱金属元素的来源和析出迁移规律进行了概述。
- Other Alkali Metals include Hydrogen (technically not a metal), Lithium, Sodium, Potassium, Rubidium, and Cesium. 其它碱金属包括氢(技术上说不是种金属),锂,钠,钾,铷,铯。
- Different concentrations of oxygen-bearing organic matter show different influence on the absorbance of alkali metals with different regularities. 实验结果表明,不同浓度的含氧有机物对碱金属族各元素的吸光度影响幅度是不同的,其影响规律也有所不同。
- Strictly forbid with the combustible or the combustible thing,the revivification,alkali,alkali metals,edible chemicals etc. mix to pack to mix a luck. 严禁与易燃物或可燃物、还原剂、碱类、碱金属、食用化学品等混装混运。
- This review summaries the application of ion exchangers in the separation and determination of alkali metals, alkali-earth metals, noble metals, rare earth elements and actinoid. 离子交换剂在萃取色谱中得到了广泛的应用,本文详细总结了离子交换剂在分析化学中用于碱金属、碱土金属、贵金属、稀土元素、锕系元素等的分离与测定。
- Opaque, PTFE beakers.Rigid and non-porous with a smooth surface.Resist all chemicals except molten alkali metals and fluorine.Are an efficient substitute for platinum. 此类烧杯乃属不透明,硬质、无孔、平滑表面,几乎对所有的化学品皆有抗性的烧杯,惟对熔化之碱金属及氟较为敏感,是铂的良好取代品。
- In the analysis of alkali metals by atomic absorption spectrometry,the oxygen-bearing organic matter with high dissolvability affects the absorbance of alkali metals greatly. 原子吸收光谱法是目前对碱金属族各元素进行分析检测的主要方法之一,在检测的过程中若试样中存在水中溶解度较大的含氧有机物时,碱金属元素的吸光度将受到影响。
- Water, acrylonitrile and the galactomannan gum are added to a reactor with an alkali metal hydroxide. 水、丙烯晴和半乳甘露聚糖胶,同碱金属氢氧化物在一起,加入到反应器中。
- A carbonate or hydroxide of an alkali metal, the aqueous solution of which is bitter, slippery, caustic, and characteristically basic in reactions. 碱碱金属的碳酸盐或氢氧化物,其水解溶液味苦、滑腻、有腐蚀性且在反应中呈碱性
- Non-alkali cloth made form aluminum boron silicate glass contains less than 0.8% of alkali metal oxide. 无碱布采用铝硼硅酸盐玻璃成份,其碱金属氧化物含量不大于0.;8%25。
- Poly(acrylic acid acrylamide) alkali metal salt complex is a new kind of solid polymer electrolytes. 聚(丙烯酸-丙烯酰胺)-碱金属盐复合物是一种新型高分子固体电解质。
- Different functional group also brings different influence for the absorbance of alkali metal. 有机物官能团上的差异也将对碱金属元素的吸光度产生不同的影响。
- The distribution and reaction of alkalis metals in BF are discussed. 发现高炉中的碱金属主要由烧结矿和燃料(焦炭、煤粉)带入,通过炉渣排出;
- After removing the alkali metal by means of ion exchange, this acid waste water that has been disposed by precipitating can produce ammonium nitrate. 经沉淀处理后的酸性度水,采用离子交换除去部分碱金属离子钙镁后,可结晶生产工业硝酸铵;
- Benzofuroxan (BFO) is obtained generally by oxidization of 2-nitroaniline by sodium hypochlorite with alkali metal hydrates used as the catalysts. 苯并呋咱-N-氧化物(BFO)一般以碱金属氢氧化物为催化剂通过次氯酸钠氧化邻硝基苯胺合成得到。