| 单词 | idle wheel |
| 释义 | > as lemmasidle wheel idle wheel n. (also idle-wheel) †(a) a safety-wheel to come into operation in case of the ordinary wheel breaking down; (b) an intermediate wheel used for connecting two geared wheels when they cannot be brought sufficiently near to gear directly, or when it is necessary that the ‘follower’ should revolve in the same direction as the ‘leader’, which would not be the case if they geared directly. extracted from idleadj.n.idle wheel There are numerous compounds, as cartwheel n., cog-wheel n., driving wheel n., fly-wheel n., etc., etc. fifth wheel, idle wheel: see fifth adj. 1c, Compounds 1, idle adj. 5b.extracted from wheeln.< as lemmas |
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