| 单词 | friction-roller |
| 释义 | > as lemmasfriction-roller friction-roller n. (a) a roller placed so as to lessen the friction of anything passing over it; (b) see quot. 1888. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > other parts > [noun] > parts for reducing friction bearing1734 friction-wheel1772 friction-roller1793 friction-ball1813 cylinder1819 screw-down1864 ball bearing1867 needle roller1935 society > occupation and work > equipment > machine > parts of machines > other parts > [noun] > parts for reducing friction > part of friction-roller1793 ball bearing1904 1793 F. Wollaston in Philos. Trans. (Royal Soc.) 83 150 Friction-rollers were applied to take off some of the weight. 1875 R. F. Martin tr. J. Havrez On Recent Improvem. Winding Machinery 91 The movement of this valve is produced by a cam with bosses, by means of a lever and a friction-roller. 1888 Lockwood's Dict. Mech. Engin. Friction Rollers, or Friction Wheels, small rollers which revolve in bearings, and sustain an axle in the depression formed by the contiguity of the upper portion of their peripheries. < as lemmas |
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