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虽然前者计算是错误的,结论认为间接法是在混进岩石为单一品位条件下建立的,故不能适应于岩石品位不同时的条件。必须另行推导计算式。
Although the former calculation is wrong, the conclusion is that the indirect method is established under the conditions of mixed rock into a single grade, so it can not be adapted to the conditions of different rock grades. The formulas must be derived separately.