Constant average social productivity of labour is the basis of historical cost measure attribute, constant money value stabilization is the basis of nominal moneytary measure unit.

历史成本会计原则的直接基础有两个，即社会平均劳动生产率不变假设和币值稳定假设。

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On the survey basis, the productivity and unit operating cost of LHD used in some underground mines in China are generally reviewed.

作者在调查研究的基础上，论述了铲运机在我国地下矿山的生产能力和作业成本。

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On the basis of the real time information system of a power plant developed is an on line practical for use mathematical model for evaluating the operation cost effectiveness of a monoblock unit.

在电厂实时信息系统的基础上，开发了实用的单元机组运行经济性在线数学模型。

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Airlines would face an even higher cost on a per unit basis.

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"So, the permeability of reverse osmosis membrane is key to improving capacity per unit cost--or on a capex basis, " said Jeff Green, CEO of NanoH2O.

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