1. a pungent colorless unsaturated liquid aldehyde made from propene. 
   一种无色、气味刺激的不饱和液态醛，由丙烯制成。
2. pathogens causing leaf spot 
   叶斑病原微生物
3. a sweet crystalline aldehyde formed by the breakdown of sugars. 
   一种甜味的晶状醛，由糖分解形成。
4. a monosaccharide sugar that contains the aldehyde group or is hemiacetal. 
   含有乙醛基或其半缩醛的单糖。
5. Any of a class of monosaccharide sugars containing an aldehyde group. 
   醛糖，醛式糖含有醛类的单糖中任意一种

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• 1. 叶醛
  叶醇 leaf aldehyde...叶醛 leaf analysis...叶片分析,叶质分析 leaf analysis data
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