effective onadj.对 ... 有效应effectiveadj.有效的；生效的；实际的Effective Time Belt有效时间带effective apparatus效应器effective wing area机翼有效面积effectiveness level[电] 效率阶组effective tap width有效抽头间距effective admission有效进气effectiveness audit效益<果>审计effective spot size有效光点大小,有效斑点尺寸effective SIF range有效应力强度因子幅effective intention效果意思