单词	back taper
释义	back taper noun : a slight relief on a tap or drill causing it to have a larger diameter at the point than at the shank Word History First Known Use 1941, in the meaning defined above
随便看	motorcading motorcar motorcars motorcoaches motorcoachs motorcross motorcrosses motorcycle motorcycled motorcycles motorcycling motorcyclist motorcyclists motordom motordoms motordrome motored motorer motorest motoric motorically motoring motorings normaller normallest

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