当每个音响单元的底座开始振动，上面各式的玻璃元件就会把这些振动传送，而在这个过程中每个元件就会产生不同频率的声音。

The units at the base of each speaker vibrate, and these vibrations are then transmitted through the various glass elements above, each of which produces different frequencies of sound.

youdao

项目还将升级F - 35无限频率测试系统的接口单元，该测试系统主要反映系统如何在真实环境下作战。

The project also included an update of the interface units for the F-35 radio frequency test system.The test system reflects how the system would operate under real-world conditions.

youdao

项目还将升级F-35无限频率测试系统的接口单元，该测试系统主要反映系统如何在真实环境下作战。

The project also included an update of the interface units for the F-35 radio frequency test system. The test system reflects how the system would operate under real-world conditions.

youdao