单词 | index wheel |
释义 | > as lemmasindex wheel index wheel n. any of several wheels having notches, graduations, or perforations for performing actions at regular intervals or for regulating other machinery. ΚΠ 1884 E. H. Knight Pract. Dict. Mech. Suppl. Index Wheel. 1. A graduated plate marked in circles of holes, for spacing in the cutting of gears... 2. A graduated wheel in an instrument for dividing or measuring angles, or in some forms of calculating instruments. 1902 T. Thornley Cotton Combing Machines 37 The index wheel greatly facilitates the adjustment of the time for action of the various parts that act on the cotton. < as lemmas |
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