According to weight coefficient of binary variable, discrete variables can be gradually determined in optimization process, and their discretization can be realized during iteration successively.

并且，在优化过程中根据二进制变量的权重系数逐步确定离散变量的取值，实现了离散变量在优化过程中的逐次归整。

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Authentication providers may allow reading user identity information from an environment variable or some binary token.

身份验证提供者可能允许从环境变量或某个二进制令牌读取用户身份信息。

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Create a shell variable called cc whose value is the full path file name to the GCC binary.

创建一个shell变量cc，它的值是gcc二进制代码的完整路径文件名。

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