definite proportion meaning in English
定比
Examples
- The principle of this method is that we can regard the time stratum unit as three - dimension sedimentary body , when the stratum formed in a certain geological epoch , there was a definite proportion relationship between the thickness of the stratum and the thickness of the time stratum unit
其理论依据是：等时地层单元内，由某一地质历史时期所形成地层厚度与沉积时间具有一一对应的关系，据此对某一等时界面上的沉积特征进行数字化的描述。