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beat frequency
释义
物理学词汇手册
beat frequency
拍频
随便看
direct observation
direct occurrence of description
direct octaves
direct operating expenses
direct optical viewfinder
director
director
director
director
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director
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director
director
director
director
director and officer liability insurance
director and officer liability insurance (D&O liability insurance)
directorate
direct orbit
director board
director circle
direct order
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