Plasma surfacing of oil drill bits (Плазменная наплавка нефтяных буровых долот)
Plasma surfacing of oil drill bits (Плазменная наплавка нефтяных буровых долот)
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![[Media Division] f0.3 – The Impossible Lens – Building a Large Format DoF movie camera – Epic Episode #18](https://sun9-77.userapi.com/impg/hH-XJBwT5TbhxaVZBmDdWMc6zrqt0-A3ktEXFA/1BFANItI38k.jpg?size=320x240&quality=95&keep_aspect_ratio=1&background=000000&sign=5ccff5048b5be1c293126b8f50493829&c_uniq_tag=MT6MivNVL6Mx-sih2D4j8n0heEwqe_MZ-pgRD93uCMM&type=video_thumb)
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