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与"beam falloff"相近的词条

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• beam excursion
• beam exit channel
• beam expander
• beam extraction
• beam extractor
• beam falloff
• beam filter
• beam flattener
• beam flux
• beam focusing、beam-focusing
• beam-forming
• beam forming cathode
• beam-gas scattering
• Beam Gate
• beam generating function
• beam-guidance

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