double-groove

英['dʌblɡr'uːv] 美['dʌblɡr'uːv]
  • [机]双槽
  • double adj.双重的;成双的;两倍的v.翻一番;使...加倍n.两倍;双份
  • elevator n.电梯;飞机升降舵;斗式皮带输送机