1. 同时性：synchronal 同时的 | synchroneity 同时性 | synchronism 同步
2. 同时性,同步性：同时性 synchrone | 同时性,同步性 synchroneity | 同步 synchronization
noun
1. the relation that exists when things occur at the same time
e.g. the drug produces an increased synchrony of the brain waves
Synonym: synchronism synchrony synchronicity synchronization synchronisation synchronizing