...新 2009 年 4 月 1 日 本单元主要内容： 第六章 醛、酮和醌 (aldehyde ketone and quinine) 第一节 醛和酮 (aldehyde and ketone) 一、醛、酮的结构与分类 二、醛、酮的命名 三、醛、酮的制备 四、醛、酮的物理性质 五、醛、酮的化学性质 1.
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Preparing alkenyl halide from aldehyde and ketone.
以醛酮为原料合成卤代乙烯类化合物。
For the fermented apple pomace, ester took up more than 50% in the total volatile products, with less than 15% of alkyl -, aldehyde and ketone.
发酵后苹果渣中挥发性物质中50%以上为酯类物质，醛、酮、酸类相对含量不到15%。
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。
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