By means of EPR, we estimated the number of unpaired electrons of CAW and a plenty of unpaired electrons existed in CAWs, as shown in the experiments, in agree with their structure proposed.

• 通过电子顺磁共振，我们定量测量了碳原子线中未成对电子的数目，结果显示碳原子线中有大量的未成对电子，此结果同碳原子线的分子结构是基本一致的。