Even if precisely measured, income data exclude important determinants of economic well-being, such as the hours of work needed to earn that income.

即使收入数据经过精确测量，它也排除了经济福利的重要决定因素，比如赚取这些收入所需的工作时间。

Real income measured in terms of product and income measured in terms of wage-units will, however, increase and decrease together (in the short period when capital equipment is virtually unchanged).

然而，以产品衡量的实际收入和以工资单位衡量的收入将同时增加和减少（在资本设备几乎没有变化的短期内）。