单词	roller chain
释义	roller chain noun : a block chain in which hollow transverse blocks or cylinders turning on steel pins act as rollers to lessen friction Word History First Known Use 1841, in the meaning defined above
随便看	apagogic reduction apagogical apagogically apaid Apalachee apalachees apalachi Apalachicola apalachicolae apalachicolas apalachis Apalai apalais apanage apanages apandrous apandry Apanteles Apantesis Apanto apantos Apaporis apar aparaphysate Aparecida de Goiânia

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