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1·The photo product was determined to be the keto form.

确定了光致变色的产物为双质子转移的酮式结构。

2·The calculation of the thermodynamic parameters shows that the transformation from enol to keto form is endothermic process.

热力学参数的计算表明，从烯醇式到双酮式构型的转变是一个吸热过程。

3·This paper presents the studies on the reaction form of urea or nitrourea which condenses with nitrolysis fragments of urotropine to form Keto RDX in nitrating agents.

通过改变加料方式来研究脲或硝基脲在硝化剂中与乌洛托品硝解碎片进行缩合反应的形式。