The nitrogen hetero atomic shape structure is aza big ring or aza condensedring or nitrogen hetero atomic ring shape conjugate symmetry or nitrogen hetero atomic ring shape conjugate asymmetry.
所述含氮杂环状结构为氮杂大环或氮杂稠环或氮杂环状共轭对称或氮杂环状共轭不对称。
2
The moon is thought to have condensed rapidly from this ring.
普遍认为，月球正是由这个圆环迅速凝结而成。
3
Meanwhile IR analysis showed that side chain between molecule and hydrogen of aromatic ring were decreased, condensed degree was increased in catalytic oxidation.