In this paper, the problem of the entropy increase or decrease of the exploit of the mineral resources and the relationship between entropy and natural value are discussed.

讨论了矿产资源开发利用的熵增、熵减问题，以及熵与自然价值的关系，进而建立了矿产资源开发利用系统价值概念模型。

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Food fortifier "means any natural or artificial food additive belonging to the category of natural nutrients that is put into food to increase its nutritive value."

营养强化剂：指为增强营养成分而加入食品中的天然的或者人工合成的属于天然营养素范围的食品添加剂。

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With the increase of extra-long tunnel construction, obviously, the empirical value can not keep up with the actual. So it needs to work out a method for natural wind computation.

随着特长隧道建设工程的增多，经验取值显然与实际不符，有必要建立一套隧道内自然风计算方法。

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