https://pan.baidu.com/s/1Uag-Ed9eDMxKu6DRsFXRSg
https://pan.baidu.com/s/1FHMBUgM2Qf7QntxowrrDAw
Yantai Changyun Electronics Co.,Ltd will have a holiday from...
In order to avoid the need to change as much as possible and...
During the development of the project, the user will ask for...
Design refers to the design of the software system architect...
The goal is to capture user needs and define product require...
