Crop circle designs have developed from simple circles in the 1970s to pictorial designs in the late 1980s and binary number designers from 2001.

上世纪七十年代出现的麦田怪圈一开始只是简单的圆形图案，到了八十年代则演变成图形设计，而从2001年以后，麦田怪圈开始呈现复杂的二进制数。

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Getting and installing FOP is as simple as downloading and unpacking the binary version (see Resources). FOP is then ready to run from the downloaded location.

要获取并安装FOP，只需下载并解压二进制版本(参见参考资料)，然后就可以从下载位置运行FOP了。

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According to a quasi-lattice model, a simple equation for predicting the interfacial tensions of binary systems from UNIQUAC parameters and mutual solubility data has been obtained.

基于准晶榴界面模型，提出用互溶度数据和UNIQUAC参数计算二元体系液液界面张力的简单方程。

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