The indexes are assigned by expert experience method and average assignment method, and it is got the weight table of evaluation index.
通过专家经验法和平均赋值法对指标进行赋值，得到评价指标权重表。
The weight-average method was applied to make the original image to the grayscale image.
在图像灰度化的阶段是采用了加权平均值的方法。
For 481 experimental data points of 29 hydrocarbons, including high-molecular-weight hydrocarbons, the new method gives a relative average error of 3.2%.
对29种包括大分子的烃类物质，481个实验数据点，本方法的平均相对计算误差为3.2%。
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