图像讯号的极性 图像讯号的极性的英文 英语翻译 polarity of picture signal 拓展翻译 探求和测量销髓电讯号的设备electrospinograph图像image; picture图像传送picture transmission图像大小picture size图像导纳image admittance图像倒转picture inversion图像电话image teolephone图像遏止image-rejection图像发射机picture transmitter图像分析image analysis图像复演率image repetition图像干扰image interfrence图像干扰比image-interference ratio图像过滤器picture filter图像黑色picture black图像接收机image receiver图像亮度picture brightness图像频率image frequency图像频率响应image frequency response图像强化器image intensifier