adj.多環(huán)的；多相的
As the isocyan group is polymerized further, diphenyl carbondiimine may be formed, further polymerization of which forms a nitrogen-containing polycyclic aromatic compound. 異氰基化合物進(jìn)一步二聚成二苯基碳化二亞胺，后者又聚合生成含氮雜環(huán)的多環(huán)芳烴。
