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 phototgraphic paper照相底版纸Negative pressure attraction负压吸引negative resistance property负电阻特性Negative Vorticity Advection负涡度平流negative frequency component负频分量negative inversion structure负反转构造negative pressure in furnace炉膛负压Negative excavation blasting负挖爆破negative resistance repeater负电阻中继器negative phasesequence relay负相序继电器