| 单词 | idle pulley |
| 释义 | > as lemmasidle pulley 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. idle pulley, the loose pulley of the ‘fast-and-loose pulley’ arrangement.extracted from idleadj.n.< as lemmas |
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