She was polishing tools.

她正在擦拭工具。

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The structural surfaces are not easy to be finished by polishing tools. A new method of precision finishing based on low viscosity liquid-solid two-phase abrasive flow was provided.

针对结构化表面不易采用工具实现精密光整加工的问题，提出了一种基于低黏度液-固两相磨粒流的精密光整加工新方法。

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The robotic automatic polishing system for plasma spray rapid mould has been developed with discussion about how to design robot polishing track, choose effective flexible polishing tools.

为了解决熔射制造大中型汽车覆盖件模具过程中人工研磨抛光时间长、劳动强度大等问题，本文建立了面向熔射快速制模的机器人曲面自动抛光系统。

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Man-made diamonds have traditionally been used for manufacturing process such as cutting and polishing tools.

FORBES: Lab-Grown Diamond Brand Taps Young, 'Rebellious' Crowd