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摄影天体光谱学
释义
摄影天体光谱学
photographic astrospectroscopy
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grinding aid
grinding allow-ance
grinding allowance
grinding amalgamator
grinding-and-buffing attachment
grinding and polishing drum
grinding angle and colouring analysis
grinding apparatus
grinding apparatus for lathe centers
grinding attachment
grinding ball
grinding base
grinding bed
grinding belt
grinding body
grinding building
grinding burn
grinding capacity
grinding carriage
grinding charge
grinding checks
grinding circuit
grinding composition
grinding compound
grinding-concentration unit
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