反应以自由基机理进行，溴取代主要发生在主链上的叔氢原子上。
Thesubstitution of bromine atoms is on the tertiary carbon of main-chain of the polymersprimally.
低溴取代的PBDE在气相浓度与颗粒相分配的比值与温度的相关性高，但高溴类化合物的这种趋势并不明显。
The ratios of gas to particle were temperature-related for low-bromine compounds, but for high bromine compounds, this trend is not obvious.
本文以噻吩与溴、锌粉依次发生取代，还原反应生成3-溴噻吩。
Thiophene reacted with bromine and zinc to obtain 3-bromothiophene via substitution and reduction reaction.
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