短語詞組短語freestream flow surface resistance 自由液面阻力flow field resistance 流場阻力flow promoter resistance 流動阻力flow -resistance characteristic coeffi-cient of pipeline 管路阻力特性系數(shù)air flow resistance 氣凌力inertial flow resistance 慣性流動阻力effective flow resistance 有效流阻 返回 flow resistance