资料来源 : pyDict

频率计; 波频计

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Cymometer \Cy*mom"e*ter\, n. [Gr. ? wave -meter.]
   An instrument for exhibiting and measuring wave motion;
   specif. (Elec.), an instrument for determining the frequency
   of electic wave oscillations, esp. in connection with
   wireless telegraphy.