调整频率 meaning in Chinese

adjust frequency
tune

The knob or numeric keypad can be used
您可通过旋钮或数字键调整频率
The simulcast or quasi - synchronous mode technique has been applied to the transit system s radio communications in order to ensure efficient use of the radio channels , and to adjust frequencies , phases , and delay times for better performance . however , in some overlapping areas , interference is still impossible to prevent
4 .捷运为了频道更有效之运用，以同频共播方式规设，调整频率、相位及时差，然而重叠区有些地方仍然无法有效避免干扰。