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Part six: the method and channel of drawing into the proportional principle.
第六部分：引入比例原则的方式与途径。
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The principle of proportional factor method is further modified and perfected.
进一步修正和完善了比例常数法的原理。
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The principle of proportional factor method is further modified and perfected.
进一步修正和完善了比例常数法的原理。
youdao