In uses in front of the software the usual use stick plot or the thick line network chart, after use the software to work thin, two not good comparisons, thus frugal time not too good quantification.

• 在使用软件之前通常使用柱状图或粗线条网络图，使用软件后工作更细化，两者不好比较，从而节约的时间不太好量化。