Accountants might be boring and lawyers might be greedy, but surgeons are generally reckoned to be unfeeling, turning anxious patients into medical specimens.

会计乏味，律师贪婪，而外科医生则显得冷酷无情，对待焦虑的病人像是对待一具医学标本。

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Set up and operate machine tools to perform repetitive machining operations, such as turning, milling, drilling, boring, planing, honing, broaching, grinding or other machining operations.

安装和操作机器工具来执行反复加工操作，如车，铣，钻，镗，刨，珩磨，拉削，磨削或其他加工业务。

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Applying the concept of relative cutting velocity, the expression of velocity type dynamic cutting force and the mechanics model of chatter vibration in turning or boring process were advanced.

针对规避切削颤振问题，应用相对切削速度概念，提出了速度型动态切削力表达式以及车削或镗削的振动力学模型。

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