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Magnetic grinding method and device based on generation of plurality of alternating fields
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Ultraprecise surface polishing method and device
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Vertical shaft rotary surface polishing machine and constitution thereof
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Abrasive member and polisher
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Method and device for forming high precision flat surface
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Work holding device in work grinding and polishing machine
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Cabochon copying abrasive device
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Interchangeable faceting apparatus with reversible dual indexing mechanism
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