与"beam of spectacles"相近的词条

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• beam monitoring
• beam observation port
• beam observation rack
• beam of homogeneous energy
• beam of light
• beam of spectacles
• beam optics
• beam orifice
• beam-out energy
• beam particle disintegration
• beam path
• beam pattern
• beam penumbra
• beam performance goal
• beam phase
• beam positioning

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