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单词 router bit
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router bit
router bit n. (a) = sense 1a (obsolete); (b) = router cutter n.
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society > occupation and work > equipment > piercing or boring tools > [noun] > drill > types of bit > parts of bit
drill string1678
router bit1872
crown1873
router1874
1872 Eng. Mechanic & World of Sci. 5 Apr. 74/3 As the mouth of mortising tool forces the chips into the hole the router bit clears it.
1900 Amer. Printer & Lithographer Sept. 6/2 Wesel Router Bits. Every known Bit for cutting wood, soft metal, zinc, brass and copper.
1953 E. G. Hamilton Power Tools for Home Craftsman vii. 230 Small router bits are usually of the single-flute type.
2002 Woodworker's Jrnl. June 11/2 A chart..indicated what speed various diameter router bits would have to operate at in order to have a tip speed of 130 mph.
extracted from routern.5
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