且这四项群聚参数均随乾旱时间比例 之增加显著下降。

All 4 community parameters decreased with an increase in drought ratio.

youdao

随后对含有突发人群聚集现象的场景和正常高密度人群场景的人群阻塞率进行了对比，由此证实了该参数的有效性。

And then it gives the blocking rate of crowd in both normal scenes and abnormal scenes, which confirms the validity of this argument.

youdao

随后对含有突发人群聚集现象的场景和正常高密度人群场景的人群阻塞率进行了对比，由此证实了该参数的有效性。

And then it gives the blocking rate of crowd in both normal scenes and abnormal scenes, which confirms the validity of this argument.

youdao