与"back scattered echo"相近的词条

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• back scatter
• back scatter constant
• back-scatter electron imaging
• back-scatter factor
• back scatter protection
• back scattered echo
• back scattered photon
• back scattering
• back scattering angle
• back scattering correction
• back scattering ratio
• back scratcher
• back screen
• back set
• back-shu points
• back sinew

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