aldehyde ketone
英
美
网络 醛酮
双语例句
- Pollutants such as aldehyde and ketone, among major pollutants in atmosphere environment, are strictly limited by every nation for their discharges because of their high toxicity and numerous sources.
醛、酮类污染物是环境中的主要污染物之一，其来源广、毒性大，各国对其排放都进行了严格的限制。 - Study on reductive coupling reaction of aldehyde and ketone induced by lower valent titanium prepared from TiCl_4-Al system
TiCl4-Al体系中低价钛诱导下醛酮还原偶联成片呐醇的反应研究 - Discussion on oxidation of aldehyde and ketone
关于醛酮氧化反应的讨论 - The results show that the oxidizing degraded products have functional groups such as phenolic hydroxyl, carboxyl ( Ar-CO-O-), methylene and etc., and have no chlorine or hydrocarbon substitute aromatics, aldehyde, ketone and quinone.
结果表明，荆树皮栲胶氧化降解产物的主要官能团有酚羟基、羧基（结构为Ar-CO-O-）、亚甲基等，不含氯代或烃基取代芳烃、醛、酮及醌。 - Electronic effect of nucleophilic additions to α, β-unsaturated aldehyde and ketone
α，β-不饱和醛酮亲核加成的电子效应 - The result showed that there was no significant different in the content of aldehyde, ketone, alcohols in the flesh of apple with different bags, but the content of esters and soluble solid content in the fruits with 14-B double layer decreased significantly at harvest.
结果表明，不同类型的袋子对乙醛、丙酮、醇类物质的含量没有显著的差异，但套14-B双层袋在果实采收期显著降低了果实中的酯类和可溶性固形物。 - Advanced in Research of the Catalytic Condensation Reaction of Aldehyde Ketone
催化缩醛（酮）反应的研究进展 - Bio-oil is a complicated mixture of organic compounds with water containing almost all kinds of organic compounds such as aether, ester, aldehyde, ketone, hydroxybenzene, alcoholic, organic acid and etc.
生物油成分分析表明，生物油是一种复杂含氧有机化合物与水组成的混合物，包括了几乎所有化学类别的有机物，如醚、酯、醛、酮、酚、醇和有机酸等。 - The made tea fertilized with urea possessed higher contents of aldehyde, ketone, furan, pyrazine and pyrrole, but lower aromatic index.
香气分析测定表明，单施尿素的红茶中，醛酮类、呋喃、吡嗪、吡咯类化合物含量较高，香气指数低，祁红香不突出。 - It has been known that small organic molecules can catalyze the direct aldol reaction between aldehydes or between aldehyde and ketone.
近年来，有机小分子已经被证实可以有效地催化醛酮的直接羟醛缩合反应。