查询词典 pyridine
- 与 pyridine 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 R f value of the glucosamine sulfate was 0.36 measured by paper chromatography with the solvent system of pyridine, ethyl acetate, water and glacial acetic acid (5∶5∶3∶1 in volume).
经纸层析鉴定，以吡啶、乙酸乙酯、水和冰醋酸按体积比 5∶5∶3∶1组成的溶剂系统进行展层，氨基葡萄糖硫酸盐的Rf 值为 0 。36。
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The Rf value of the glucosamine sulfate was 0.36 measured by paper chromatography with the solvent system of pyridine, ethyl acetate, water and glacial acetic acid (5:5:3:1 in volume).
经纸层析鉴定，以吡啶、乙酸乙酯、水和冰醋酸按体积比5：5：3：l组成的溶剂系统进行展层，氨基葡萄糖硫酸盐的Rf值为0.36。
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Under the conditions of 456 W power output and l0min irradiation time, the quantities of reactants are malonic acid 13.Og and vanillin lOg, in pyridine solvent (1 6m1), the yield of reaction is 80%.
本实验在额定功率为456W，辐射时间为10min下，反应物投料量分别为丙二酸13.6g，香兰素10g在16ml溶剂中进行反应。
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Red sun of the Group of paraquat, the herbicide, and other chlorpyrifos products as raw materials need to pyridine.
的红太阳集团的百草枯，除草剂，毒死蜱等为原料的产品需要吡啶。
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A method for the determination of antimony potassium tartrate with precon- centration of polyvinyl pyridine chemically modified electrod by using graphite furnace AAS is described.
本文研究了聚乙烯吡啶化学修饰电极预富集——石墨炉原子吸收法测定酒石酸锑钾的方法。
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The IR sp ectra of adsorbed pyridine showed that most of the acid sites on the surface of the catalyst are Lewis acid sites.
吸附吡啶的红外光谱证明该催化剂的表面酸点多为Lewis酸点。
- 推荐网络例句
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Fancy gold-plated dangling earrings with facetted White Opal crystals.
花式镀金悬垂耳环与facetted白欧泊水晶。
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This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.
本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。
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In measurements of a day,generallyspeaking,the photosynthesis of birch in mesophytic habitat is better than that in xerophytichabitat(peak values are 12.8,10.33μmolCO2m-2s-1 respectively);that of sexual birch inmesophytic habitat is better than that of clone birch(peak values are 9.87,6.71μmolCO2m-2s-1respectively);that of young tree is better than that of seedling(peak values are12.37,10.05μmolCO2m-2s-1 respectively).
在一天中的各个时刻，总体说来，中生生境生长的白桦光合作用超过旱生生境生长的白桦光合作用(净光合速率峰值分别为12.8、10.33μmolCO2m-2s-1)；白桦幼树的光合作用超过白桦幼苗(净光合速率峰值分别为12.37、10.05μmolCO2m-2s-1)；中生生境有性白桦的光合作用超过无性白桦的光合作用(净光合速率峰值分别为9.87μmolCO2m-2s-1、6.71μmolCO2m-2s-1)。