Terms for subject Multimedia containing ratio

English	Chinese
brightness ratio	明度比
contrast ratio	对比率
modulation error ratio	调制误差比率
pixel aspect ratio	像素高宽比
screen ratio	屏幕比率
sigma-noise ratio	信噪比
signal-to-interference-plus-noise ratio	信号与干扰加噪声比
signal-to-mask ratio	信号掩模比
signal-to-quantization-noise ratio	信号-量化噪声比
twist ratio	绞扭率
zoom ratio	变焦比