unsymmetrical

One of the most important one is its comfortlessness brought by the large temperature range during a day and the unsymmetrical radiation temperature difference.

制约太阳能建筑发展一个重要因素就是其昼大,室内热环境不稳定,不能提供一个长期舒适生活空间。

The invention is applied to the catalytic reactions such as aromatic ketone unsymmetrical hydrogen transfer reaction and can achieve very high yield and enantiotropic selectivity.

此发明应用于芳香酮不对氢转移反应等催化反应中，可以得到很高产率和对映选择。