negative die阴模negativeadj.否定的；消极的；负面的；负的n.否定；反面意见；底片；[数]负数vt.否定negative-going peaks负脉冲峰negative psychological消极心理negative externalities负外部性negative displacemenet负位移negative pledge clause反面保证条款,消极保证条款Negative press reports负面新闻报道negative feedback loop负反馈环negative incorporation否定成分合成negative thermotropism背热性, 负向热性negative carbonium ion负碳离子