When we think about the long process of our English study and the level of our mastery of this language that we have reached, we should say that the input and output ratio is too low.

想想我们学习英语的漫漫之路和我们对英语掌握的程度，应该说我们的投入与产出比太低了。

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The decoder determines the optimum conversion ratio to improve the efficiency of system from the relation between the input and output voltage.

首先采用译码器对输入和输出电压进行判比，确定最优的转换系数，提高了系统的效率。

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The relation between output correlation spot shape and length width ratio of input correlation image was analyzed quantificationally by using of diffraction theory in the joint transform correlation.

根据联合变换相关理论和光的衍射理论，定量分析了联合变换相关中两相关输入物长宽比与输出相关点形状间的关系。

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