理论上，土地作为生产要素，只体现为单一的生产功能，可以依据市场的价格信号进行最优配置。
Theoretically, as the factor of production, the land only effects as the single productive function, which could optimum allocation according to the price signals of the market.
本文扼要叙述了均衡凝固的理论、原则和技术，可以作为生产应用的依据。
In this paper, the theories, principles and technologies of proportional solidification are introduced briefly which can be applied to the iron casting production.
本文扼要叙述了均衡凝固的理论、原则和技术，可以作为生产应用的依据。
In this paper, the theories, principles and technologies of proportional solidification are introduced briefly which can be applied to the iron casting production.
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