It is comparatively easy to determine Customer Revenue, but how to get the accurate calculation of Customer Cost is still in discussion.

客户收入相对容易确定，但客户成本的准确计算至今仍是会计学者们在认真探讨的一个课题。

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The results showed that the accurate calculation of solubility parameters could be used for choosing the ideal composite solvents more efficiently and accurately.

结果表明，利用溶度参数理论的精确算法，可以快速、准确的选择性能更为理想的混合溶剂。

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The practical application has proven that the method is practicable and reliable and provides an efficient technical means for an accurate calculation of residual ore amount.

实际应用表明，该方法实用可靠，从而为矿山准确计算存留矿量提供了一种有效的技术手段。

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So if the seven dog years to one human year is wrong how do we work out an accurate calculation?

BBC: Dog years: How do you calculate a dog's true age?

Infrared light is emitted from all objects, even if they are dark, allowing a much more accurate calculation of their size and therefore their age.

BBC: Asteroid thought to kill dinosaurs may not be guilty

"Customers can read their meters today to make sure the bills are accurate, and also submit their readings to us, so they will be used in the calculation of their bill, " said the spokesman.

BBC: Ofgem demands billing explanation from energy suppliers