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- It turns out that experiment result with anhydrous pyridine as solvent is closer to weightlessness method.So it is better to determine the water in ery... 结果表明,以无水吡啶为溶剂测定的结果更接近干燥失重法的测定结果,在测定红霉素碱的水分时,以选择无水吡啶为宜。
- In the condition of no light andat the room temperature, DES was mixed with definite quantity succinate anhydridein anhydrous pyridine, stirring 34h and placing in acid circumstance for one night,some light brown oil substances were extracted. 避光条件下，以己烯雌酚与一定量的丁二酸酐为原料在室温条件下于无水吡啶中搅拌 34h，酸性环境中静置过夜，有浅棕色油状物析出，过滤，将得到的浅棕色沉淀减压蒸干，得粗产品。
- anhydrous pyridine 无水吡啶
- Anhydrous nitric acid is dissociated. 无水硝酸是电离的。
- Butadiene vinyl pyridine rubber latex. 丁二烯、乙烯基吡啶经乳液共聚制得的胶乳。
- Pengshan Anhydrous Sodium Sulfate Plant. 安徽全力集团有限公司彭山元明粉厂。
- Pyridine is a colorless chemical liquid. 吡啶是一种无色的化学液体。
- Citric acid anhydrous powdered p. A. 无水柠檬酸。
- Spec:Dihydrate and anhydrous standards. 规格：二水和无水两个品种。
- The yield of anhydrous plumbous acetate is also very high. 该方法操作简便,反应时间短,得到的无水醋酸铅的收率也较高。
- If not, anhydrous alcohol and carbon tetrachloride are feasible. 如果没有，无水酒精和四氯化碳都是可行的。
- In some ways, anhydrous ammonia is just as safe to handle as gasoline. 在某种程度上说，无水氨使用起来与汽油一样安全。
- Anhydrous ammonia must be incorporated (and well sealed) in all crops. 在夏季作物上施用尿素，把尿素和土壤掺混施用有好处，但在冬季作物上则不然。
- A new type of car is now being developed powered by anhydrous ammonia. 目前正在研制一种新型的以无水氨作动力的汽车。
- A simple method of preparing anhydrous indium chloride was introduced. 提出了一种制备无水氯化铟的简易方法。
- The fixation of CO2 carried out by these autotrophs, in addition to ATP, requires reduced pyridine nucleotide. 除ATP外，由这些自养生物进行的CO2固定，需要还原的吡啶核苷酸。
- The pyridine was chemisorbed at both Lewis and Bronsted sites on the glass surface. 在玻璃表面上，吡定都是化学地吸收在路易斯和布朗斯特德位置上的。
- Heterocylic aromatics such as pyridine and pyrimidines also give a somewhat similar set of bands in the 1600 cm region. 杂环芳香族结构类如吡啶、嘧啶类化合物在1600厘米-1(6.;25微米)区域也有相似的一组谱带。
- A pyridine derivative, C18H11NO3, occurring especially in cereals, yeast, liver, and fish and serving as a coenzyme in amino acid synthesis. 吡哆醇吡啶的衍生物，c18h11no3，尤其出现于谷类，酵母，肝脏和鳞中，作为氨基酸合成作用中的辅酶
- The synthetic methods of glutaraldehyde from pyridine, pyrane, 1,5-pentadiol, or cyclopentene, etc., are introduced. 介绍了戊二醛的合成方法，包括吡啶法、吡喃法、1，5-戊二醇法、环戊烯氧化法等。
