Rb211 - 535e4 engine fan blades and their maintenance 4发动机风扇叶片及其维护
A research on design and performance of hydraulic driving system of engine fan 80型自驱型园艺作业机的研究设计
Furthermore , there are complex structures such as the engine fans at the end of the inlets . it ' s hard to deal with such problems if we use high frequency method or low frequency numerical value method only 对于厘米波段雷达而言,进气道属于电大尺寸目标,其终端有涡轮叶片之类的复杂结构,单用高频近似法或低频数值法都难以解决。