會使球在進入本壘板前的曲球垂直掉落幅度遠大於快速球。是曲球相當古老的一種變化球。加上重力的曲球作用,出手時藉著手腕的曲球順時針方向旋轉與手指的向下施力, 參考 Version 1: Candy Cummings was the inventor of the curveball Version 2: Fred Goldsmith: co-inventor of the curveball or 曲球pitcher who gave first recorded demonstration of the curveball? Aerodynamics of a Curveball in Navier-Stokes Flow How to Throw a Curveball – wikiHow page outlining technique 棒球球路握球時食指與中指握在球的曲球外側縫線處,

曲球(Curveball)棒球中的曲球一種球路。曲球於1870年代首次出現,曲球使球造成旋轉,曲球進而產生垂直向分力,曲球

国家电投山东51.875万千瓦风电项目首批风机并网