So it is significant for improving casting quality and socialproductivity of labor to study fast testing system of green sand composition and performance parameter.
因此，研究湿型砂组分及性能参数快速测试系统对于提高铸件质量和劳动生产率具有非常重要的现实意义。
2
Constant average socialproductivity 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。
3
If the population, differences in socialproductivity or socialproductivity increasing, heads will prefer governance by bureaucrats more, which show us an expansion of bureaucracy scale.