aspen plus 合成氨流程模拟(以天然气为原料)? 是bkp文件,但打开时是如下提示: the following errors were encountered reading from a backup file: this file was created with a newer version (21.0) of aspen plus and is not compatible with the current version (20.0). open backup failed due to error shown above. the data for current run may be corrupted查看更多