Jisho

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(機械要素)
Wikipedia definition
1. Crank (mechanism)A crank is an arm attached at right angles to a rotating shaft by which reciprocating motion is imparted to or received from the shaft. It is used to convert circular motion into reciprocating motion, or sometimes reciprocating motion into circular. The arm may be a bent portion of the shaft, or a separate arm attached to it. Attached to the end of the crank by a pivot is a rod, usually called a connecting rod.
Read “Crank (mechanism)” on English Wikipedia
Read “クランク (機械要素)” on Japanese Wikipedia
Read “Crank (mechanism)” on DBpedia

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