... 内给电子体;internal electron donor 外给电子体;external electron donor 给电子-受电子发色体;供电子-吸电子发色体;donor-acceptor chromogen ...
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By determining drag reduction efficiency of polymer in a simulative loop evaluation apparatus, effects of DDS as external electron donor on number and distribution of active centers were confirmed.
结合室内模拟环道评价装置，测定聚合物的减阻性能，确定DDS作为外给电子体对聚合活性中心数量和分布的调变作用。
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