Each channel has a distinct electronic alarm and visual indicator when zero is reached.

每个通道配有不同的电子警报和视觉指示，在达到零秒时便会发出警报和指示。

youdao

Each channel has a distinct electronic alarm and visual indicator when zero is reached.

每个通道配有不同的电子警报和视觉指示，在达到零秒时便会发出警报和指示。

youdao