词汇	back-fin
释义	back-fin 背鳍
随便看	balancing pit balancing plane balancing-plane balancing plate balancing plug balancing point balancing pole balancing policy balancing poston balancing potentiometer balancing pressure balancing pressure pneumatic controlling door balancing pressurizing tank balancing price balancing procedure balancing process balancing reactor balancing reflex balancing reform balancing regional development balancing relations balancing relay balancing repeating coil balancing reservoir balancing resistance