Second, the problem of supply, i. e. the equilibrium storage in the flow of the resources and the productivity of them.
二是公共池塘资源的供应问题，即有关资源流量单位最大存货以及资源高产出方面的问题。
The equilibrium also helps publishers, which profit from e books because they can digitise print titles and sell them at higher margins.
这种均衡状态也有利于出版商，后者从电子书获利，因为它们很容易提供数字版本的图书，获得更高的利润率。
A graphic method for representing thermochemical data was proposed, i. e. the equilibrium surface diagram, which is useful for hydrometallurgical studies.
平衡表面图是作者近年提出的一种热化学数据图示方法，用于湿法冶金络合物体系矿物浸出或金属离子沉降的条件分析。
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