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与"beam density"相近的词条

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• beam deflection
• beam deflection flowmeter
• beam-deflection valve
• beam deflector
• beam defocusing
• beam density
• beam detector
• beam diameter
• beam direction
• beam direction device
• beam direction indicator
• beam director
• beam display
• beam distribution
• beam divergence
• beam divergence angle、beam-divergence angle

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