Terms for subject Earth sciences containing non-return-to zero

English	Chinese
non-return to zero level	非归零电平
non-return to zero logic	非归零〔制〕逻辑
non-return-to-zero	非归零制一种磁记忆制
non-return-to-zero IBM	国际商用电子计算机 IBM公司式不归零
non-return-to-zero recording	不归零制记录
non-return-to-zero system	不归零制