柯林斯詞典turbofan /?t??b???f?n/ 1. N a type of by-pass engine in which a large fan driven by a turbine and housed in a short duct forces air rearwards around the exhaust gases in order to increase the propulsive thrust 渦輪風(fēng)扇噴氣發(fā)動(dòng)機(jī) (Also called high bypass ratio engine) 返回 turbo fan