平均: average; mean有效: effective; valid; efficaciou ...螺距: pitch; flight lead; pitch of ...有效螺距: effective (or virtual) pitch; effective piston; effective pitch; virtual pitch有效螺距比: effective pitch ratio有效螺距角: effective pitch angle有效螺距,有效节距: effective (or virtual) pitch平均有效度: mean availability平均有效率: average effectiveness level平均有效性: mean availability平均有效值: mean effective value; mean effectiveness平均有效波长: mean) effective mavelength平均有效功率: mean effective horsepower; mean effective power平均有效马力: mean effective horsepower平均有效时间: mean effect time平均有效温度: mean effective temperature平均有效系数: mean efficiency factor平均有效压力: effective mean pressure; mean effective pre ure; mean effective stress; mean indicated pressure; memean effective pressure平均有效压强: bmep平均有效粘度: mean effective viscosity平均有效直径: mean effective diameter有效螺距比,有效节距比: effective pitch ratio摩擦平均有效压力: friction mean effective pressure; frictionmean effective pressure平均有效杀伤面积: mean of effectiveness area平均有效信息量: average amount of effective information
