convergevi.聚合；集中；会聚vt.使集合convergency model集聚传播模型convergent series收敛级数convergent mirror会聚镜converge validity聚合效度convergent channel会聚槽converge statement约束语句converge of blocks地块聚合convergent reactor收敛反应堆convergent section喷管的收敛部分,收敛段convergency theory趋同理论