In our case, we chose to have the PA end hold the foreign key of the User so there would be a column in the table representing a PA that holds the primary key of the User table.
The key technologies of the industrial wireless network system based on the WIA-PA standards are introduced and the development, testing and application of the system are explained.
介绍了WIA-PA标准规范的工业无线网络系统的关键技术，并对该系统的研发、测试和应用进行了论述。
3
Correct preoperative qualitative diagnosis of APA is the key step for the surgical treatment for PA.