六角异径接头
/ˈhɛksaɡən ˈbʊʃɪŋ/
n
English: hexagon bushing · 六角异径接头
English · hexagon bushingEspañol · reductor con cabeza hexagonalFrançais · réduction mâle-femelle hexagonale
释义：Fitting with a hexagonal head. It joins two pipes of different diameters: one pipe is screwed onto the male end, and the other into the female end.