【医】 扁平丘疹性梅毒疹, 豆状梅毒疹

Flat Screen

cardinal plane【电讯】;main plane【航】;primary flat【电子】

flat-bed sewing machine, free-arm sewing maschine

mud flat

flat fillet

flat die forging【机】;open die forging【机】;

plate link chain (flat articulated chain)

planar pair, flat pair