/ˌpɪr.iˈɑː.dɪ.kəl.i/
in a way that is repeated after a particular period of time
周期性地
The equipment should be tested periodically.
/ˌpɪr.iˈɑː.dɪ.kəl.i/
in a way that is repeated after a particular period of time
周期性地
The equipment should be tested periodically.