单词 | 后移 |
释义 | 〔retreat〕The process of going backward or receding from a position or condition gained.撤回原位的过程:从已获得的位置或状况中后移或退却的过程〔pawl〕A hinged or pivoted device adapted to fit into a notch of a ratchet wheel to impart forward motion or prevent backward motion.掣爪,棘爪:一种枢轴或转轴器械,能与齿轮缺口或齿间吻合来前进或防止后移 |
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