The cutting edges may be formed by torsioning, cutting, grinding, machining, laser micromachining, or grit blasting.

刃口可通过扭转、切割、磨削、机械加工、激光显微机 械加工或喷钢砂处理形成。

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For example a work shop or grit blasting area where hot work is considered "normal operation" will not require Permit to work.

例如在喷钢砂处理区域，高温作业是“常规操作”，所以就不必申请作业许可证。

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This system can be used in a wide variety of blasting operations including coating removal, blending, peening, grit blasting and general purpose blast finishes.

该系统能够进行各种喷丸操作，包括涂层剥离，混料，喷丸，打磨喷丸和通用目的的喷丸精整。

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Grit-blasting usually takes off original texture and detail as well as grime which often, funnily enough, protects the stone underneath.

ECONOMIST: Conservation