【计】 aggregate signal
gather; troop together; aggregate; assemble; concourse; convene; muster
rendezvous; congregation; concentration
【计】 disjoint set
【医】 aggregate; aggregation; agmen; agmina; convergence
【经】 assembly
semaphore; signal
【计】 semaphore; signal
【化】 sign; signal
【医】 signal
【经】 call letter; signal