negative AGC反向自动增益控制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 pressure generator负压发生系统negative foreign investment对外负投资negative conditioned reflex阴性条件反射negative heliographic paper日光照相底版纸negative carrier modulation负载波调制negative imminence inverter负导抗变换器negative saturation current反向饱和电流negative metacentric height负初稳性negative feedback amplifier负回授放大器,负回输放大器,负反馈放大器negative-sequence current负序电流