关于aspen plus里面的pipe计算? 帮助文件里面来了一句 correlationsfor connection type (flanged welded or screwed) and fittings (gate valves,butterfly valves, large 90 deg. elbows, straight tees and branched tees) are from a proprietary source. 只有5个模型也就不说啥了 而且就一个当量长度的东西还整什么专利所有 至于么。。 查看更多