简单的小系统，轻量级系统。不用搭建服务器。轻松做到管理小工厂的运作
Simple small system, lightweight system. No need to build a server. Easy to manage the operation of small factories (2020-03-30, VBA, 713KB, 下载4次)
螺旋管换热器的计算及选型，对于螺旋管前期计算设计有很大帮助
The calculation and selection of spiral tube heat exchanger are very helpful for the early calculation and design of spiral tube (2019-12-21, VBA, 34KB, 下载3次)