資料來源 : pyDict

水力測功器; 水速計; 流速計

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Hydrodynamometer \Hy`dro*dy`na*mom"e*ter\, n. [Hydro-, 1 +
   dynamometer.]
   An instrument to measure the velocity of a liquid current by
   the force of its impact.