switchboard framework

例句：

1. 1. The switchboard frameworkis crucial for the operation of the communicationsystem.
   交换机框架对于通信系统的运行至关重要。
2. 2. Theengineers were working on a new switchboard framework design.
   工程师们正在研究一个新的交换机框架设计。
3. 3. The switchboard framework was designedto improve efficiency and reduce costs.
   交换机框架的设计旨在提高效率和降低成本。