non-return-to-reference recording
non-return-to-chang recording 不归变更记录 non-return-to-reference recording 不归位记录 ; 不归零记录 non-polarized return-to-zero recording 非极化归零记录 ..
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non-return-to-reference recording
nonreturn-to-reference recording
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non-return-to-reference recording
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non-return-to-reference recording
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