运输网络中有流量需求的转运结点不遵从流量守恒条件，也不能按源、汇及中间结点归类。
In transportation networks, a transshipment node with flow demands fails to conform to flow conservation, and can not be categorized to a source, a sink or an intermediate node.
我觉得这是一个建议性的提示，它是说不带中间结点的结构单元可以产生更精确的结果，可以不用理会。
Structure elements without mid nodes usually produce much more accurate results in quad or brick shape.
公式计算是通过在公式语法解析返回的语法树的结点中添加辅助计算信息，将用户输入的公式串转换成中间代码，最后得到公式计算结果。
By adding auxiliary calculating information into parse tree nodes, formula string input by users is converted into temporary codes; finally we get the correct result.
应用推荐