working back plane

例句：

1. 1.The engineer was working on a back plane to fix the car's engine.
   工程师正在工作后平面修理汽车的引擎。
2. 2.The company is working on a back plane to improve its operations.
   公司正在工作后平面改进其运营。
3. 3.The team was working on a back plane to develop a new software program.
   团队正在工作后平面开发一个新的软件程序。