Root exudation of wheat, corn, broad bean and pigeon pea mainly include organic acid, phenol, hydrocarbon, grease, ketone, mellow, amide, benzene, aldehyde and thiazole et al.
小麦、玉米、蚕豆和鹰咀豆根分泌的主要类型有有机酸、酚、烃、脂、酮、酰胺、醇、苯、醛和噻唑。
At the same time, some other oxycompound groups, such as carbonyl group, aldehyde group and ketone group, appear or increase with temperature rising.
与此同时，醛、酮、酯类羰基、芳香酮、醛类羰基等类含氧基团或者从无到有，或者官能团数量不断增加。
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。
The results showed that the volatile constituents of Rhododendron athopogoides Maxim, mainly includes aliphatic acid and ester, aldehyde, ketone, aromatic and its heterocyclic compounds.
结果表明：烈香杜鹃精油化学成分以高级脂肪酸酯、酮、芳香族化合物及芳香杂环化合物为主。
A new method for determining second virial coefficients of ketone, aldehyde, aether and nitrogenous compounds was developed based on the corresponding-states principle.
本文提出了一套新的用来确定酮、醛、醚和含氮化合物第二维里系数的新方法。
Various aryl triflates, bearing ketone or aldehyde groups, were evaluated for palladium-mediated introduction of an amino group at the triflate position in the presence of various phosphine ligands.
各种含有酮或醛的芳基三氟甲磺酸酯在催化量的钯和膦配体的存在下与胺或酰胺发生取代反应。
The hydroperoxide of formula (II) may then be converted to a phenol and an aldehyde or a ketone of the general formula R1COCH2R2 (III), in which R1 and R2 have the same meaning as in formula (1).
然后可以将式（II）的氢过氧化物转化成酚和通式R1COCH2R2（III）的醛或者酮，其中R1和R2具有与式（I）中相同的含义。
Conclusion: Volatile components of apple seed are organic acid, olefins, alkane, aldehyde, ketone, phenol.
结论：苹果籽含有有机酸、烯烃、烷烃、醛、酮、酚类挥发性成分。
Preparing alkenyl halide from aldehyde and ketone.
以醛酮为原料合成卤代乙烯类化合物。
The experiment results show that CrO 4h - quaternary ammonium salt resin is an effectively selective oxidant for oxidation of alcohol to aldehyde of ketone.
实验结果表明，铬酸氢根季铵盐树脂是一种氧化醇为醛或酮的有效选择性氧化剂。
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%。
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%。
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