Fourty富尔蒂
fournum.四
four-bit slice四位片
four-in-line四缸直列
four differences四异
four-wo system4-2 配备
four-way union四通接头
Four Layer Fabric四层织物
four-speed gear加速齿轮 [outer]
four-core cable四芯电缆
Fournier syndrome福尼耶综合征
four-state tube四级管像增强器