Terms containing non-return-to-zero mark

Subject	English	Chinese
space	non-return to zero mark recording	不归零符号记录
avia.	non-return to zero—mark	非归零------- 标记
IT	non-return-to-zero mark	标记不归零制
space	non-return-to-zero mark code	不归零传号码
tech.	non-return-to-zero mark recording	不归零符号记录方式
tech.	non-return-to-zero mark recording	不归零制标记记录
el.	non-return-to-zero mark signal	不归零标记信号