一般功能输出。
It is a very common error to read code with include, or require, functions, or another file access function, and have Spaces or empty lines that are output before header is called.
这是一个非常常见的错误与包括阅读代码，或者要求，功能，或另一个文件访问功能，前有空格或空行输出标题。
The paper presents a new cost allocation method based on output distance function for assigning the costs associated with these common equipment items and fuels to the regional cogeneration products.
针对区域内热电产品的成本分配问题，提出了基于产出距离函数的成本分配方法。
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