用增量分析方法推导出单位产品成本变动率分析模型。
Incremental analysis is employed to infer the analytical model of the change ratio of unitcost.
还有单位类似毫秒、微秒，有日、周、小时、世纪、月等，这些都是导出单位。
We have milliseconds, we have microseconds we have days, weeks, hours, centuries, months all derived units.
现通过实践，推导出单位炸药消耗量的近似计算公式，与查表求出的数值基本吻合，从而更具有实用性。
Here is another approximation formula come from practice to determine the explosive consumption. It is more practical and could be calculated precisely without the table.
现通过实践，推导出单位炸药消耗量的近似计算公式，与查表求出的数值基本吻合，从而更具有实用性。
Here is another approximation formula come from practice to determine the explosive consumption. It is more practical and could be calculated precisely without the table.
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