negative-positive-negative  负-正-负; 负正负

negative-positive-negative continuous arc  反→正→反连续弧形

positive or negative view points  开发之正负面看法

positive-negative-positive  正-负-正

eventually positive (negative) solution  最终正（负）解

eventually positive negative solution  最终正负解

negative positive process  负正处理

negative-positive  阴阳

negative-positive procedure  负片-正片反转晒印法

negative-positive reversal color film  正负反转彩色胶片

negative-positive-zero  负-正-零

positive ’or’ gate  正或门

Positive and Negative Pulse  正负脉冲

positive negative ambivalent quotient  正负矛盾情绪商

positive negative control  正-负控制

positive negative three-step action  正负三位作用

positive OR gate  正或门

positive polarity  正极性

positive polarity logic  正性选辑