查询词典 pentanedione
- 与 pentanedione 相关的网络例句 [注：此内容来源于网络，仅供参考]
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A method is described for the separate determination of diacetyl and 2,3-pentanedione in beer by GC-ECD, The conditions of sample preparation and GC determination have been-discussed.
本文介绍了采用GC-ECD分别测定啤酒中双乙酰和2，3-戊二酮的方法，文中讨论了样品制备及GC的测定条件。
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The combination of chemicals includes a catalyst, such as, dibutyl tin dilaurate; carboxylic or sulfonic acid; and an extender compound, such as 2,4 pentanedione.
该化学试剂混合物包括催化剂，如二月桂酸二丁基锡；羧酸或磺酸；和增量化合物，如2，4－戊二酮。
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When heated above 300℃, compound 1 decomposes, forming Ir, 2, 4-pentanedione, 3-butene-2-one and 2, 5-dimethyl furan etc. in argon. When compound 1 decomposed in oxygen, fewer kind of thermolytic pmducts can be obtained.
三（2，4-戊二酮）合铱在氧气气氛下由於能够比较充分地氧化，因而分解产物种类比在惰性气氛下由於自身分解而生成的产物种类少并且稳定。
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3,6-Bis(1 H -1,2,3,4-tetrazol-5-yl-amino)-1,2,4,5-tetrazine was synthesized by triamino- guanidinium nitrate with 2,4-pentanedione of condensation, followed by oxidation and substitution reaction. The product was characterized by elemental analysis, IR, NMR and DSC.
以三氨基胍硝酸盐、戊二酮为起始原料，经缩合、氧化、取代等反应合成了3，6-双(1 H -1，2，3，4-四唑-5-氨基)-1，2，4，5-四嗪，并通过元素分析、红外、核磁、差示扫描量热法等分析手段对其进行了表征。
- 推荐网络例句
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In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.
。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。
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Go down on one's knees;kneel down
屈膝跪下。。。下跪祈祷
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Nusa lembongan : Bali's sister island, coral and sand beaches, crystal clear water, surfing.
Nusa Dua ：豪华度假村，冲浪和潜水，沙滩，水晶般晶莹剔透的水，网络冲浪。