Fourty富尔蒂
fournum.四
fourdrinier wire长网线
four-bar guide四柱导承
four-point bit四刃钎头
foursquare pixel方像素
four-piece rim四构件式轮辋
four corner code四角号码
four-way cross四系杂交
Fourier variable傅里叶变量
four maims of CP合作原则四准则
fourier analyzer傅里叶分析器,傅里叶分析仪,谐波分析器