The first and third steps are multi-commodity flow problem; while the second step is the network coding problem.
第一阶段和第三阶段面临的是多商品流问题，第二阶段是网络编码问题。
People usually encounter Chinese character coding problem during the process of Web programming and designing.
在进行网络编程设计中，人们常碰见中文字符编码处理等问题。
People usually encounter Chinese character coding problem during the process of Web programming and designing.
在进行网络编程设计中，人们常碰见中文字符编码处理等问题。
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