polarized return to zero recording 极化归零制记录

nonpolarized return to zero recording 非极性归零记录制

polarized return-to-zero recording 极化归零记录

non-return to zero recording 不归零记录

nonpolarized return-to-zero recording 非极化归零记录

non-polarized return-to-zero recording 非极化归零记录

non-return-to-zero recording 不归零记录

rz return to zero recording 归零记录

non-return to zero mark recording 不归零符号记录方式