ratchet
ratchet 英 ['rætʃɪt] 美 ['rætʃɪt]
n. 棘轮；棘齿 vt. 安装棘轮于；松脱
进行时:ratcheting 过去式:ratcheted 过去分词:ratcheted 第三人称单数:ratchets 名词复数:ratchets
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- n. 棘轮；棘齿
- vt. 安装棘轮于；松脱
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1. In a computer, the games are played 100 times, mimicking a ratchet with many teeth.
在计算机中，这个游戏进行100次，以模拟有许多齿的棘轮。
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2. The main obstacle is a series of five seemingly inconsequential mutations that function like a ratchet in a cog system, allowing motion forward but not back.
主要的障碍是一连串五个看似无关紧要的突变，就像一个齿轮系统中的一个棘轮的功能一样，随着运动向前，从不倒退。
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3. This trapping of heavier objects -- moving them upward when one would expect them to fall down -- is the essence of a ratchet.
这种对较重物体的捕获机制--人们觉得重物体会向下走，然而捕获机制会使它们向上--这种机制正是棘轮的本质。
- ratchet (n.) 1650s, rochet, from French rochet "bobbin, spindle," from Italian rocchetto "spool, ratchet," diminutive of rocca "distaff," possibly from a Germanic source (compare Old High German rocko "distaff," Old Norse rokkr), from Proto-Germanic *rukka-, from PIE root *ruk- "fabric, spun yarn." Compare rocket (n.2). Current spelling in English dates from 1721, influenced by synonymous ratch, which perhaps is borrowed from German Rätsche "ratchet."
- ratchet (v.) 1852, from ratchet (n.). Transferred sense attested by 1977. Related: Ratcheted; ratcheting.
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