Hereinto, the assembly process simulation technique was based on digital mock-up, and its application features and existing difficulties in airplane parts assembly were explained. 其中，装配过程仿真技术是以数字样机为基础的，并说明了其在飞机部段对接中的应用特点和存在的难点。
Focusing on the fractionating tower of the Delayed Coke Unit,the article introduces amodel-setup method of simulation software in the PetrochemicaI process. 本文以延迟焦化装置的分馏塔系统作为研究对象，介绍了一种石油化工过程仿真软件的建模方法。
