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、酯羰基、芳香酮、醛羰基等基团从无到有，官能团数量不断增加。

Sugar alcohol (alditol) An alcohol derived from a monosaccharide by reduction of its carbonyl group (CO) so that each carbon atom of the sugar has an alcohol group (OH).

单糖的羰基(CO)还原得到一个醇．继而糖分子的每个碳原子都连有一个羟基(OH)。