单词	正方双锥面
释义	正方双锥面dipyramid; tetragonal
随便看	negative reception negative reception，nr negative regulator negative reinforcement negative reinforcement bar negative reinforcer negative--reinforcing s. negative relationship negative replica negative reporting negative resist negative resistance negative resistance amplifier negative resistance bridge negative-resistance bridge negative resistance circuits negative resistance device negative-resistance device negative resistance diode negative resistance effects negative resistance magnetron negative-resistance magnetron negative resistance{=nr} negative resistance oscillation negative resistance oscillation，nro