单词：rpm 

名词

• 
  [1.n.rpm] (同义词:[revolutions_per_minute]  [rpm(=revolutions per minute 转数／分 )]  [rev( n. 一次回转, (每分钟的)转速 v. 加快转速 )]  )
• 
  注释列句：rate of revolution of a motor; "the engine was doing 6000 revs"
• 上位词 -> [rate( n. 比率, 速度, 等级, 价格, 费用 vt. 估价, 认为, 鉴定等级, 责骂 vi. 被评价, 责骂 )]  [magnitude_relation]  [relation( n. 关系, 联系, 叙述, 故事, 亲戚 )]  [abstraction( n. 提取 )]  [entity( n. 实体 )]