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英语词汇
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单词
subgroup
释义
subgroup ['sʌbgru:p]n. 小群, 隶属的小组织, 子群【化】 族; 族周期表; 副族(指周期表中B族); 子群; 亚群(生物分类); 族(数)
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ratchet brace
ratchet casing
ratchet chain
ratchet clutch
ratchet coupling
ratchet cover plate
ratchet cyclometer
ratchet dial feed
ratchet disc
ratchet down
ratchet drill
ratchet drive
ratchet driver
ratchet feed
ratchet gear
ratchet gearing
ratchet handle
ratchet hob
ratchet jack
ratchet lever
ratchet mechanism
ratchet mechanism
ratchet mechanism
ratchet pawl
ratchet pawl bearing
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更新时间:2026/8/5 18:00:35