The defect in the microphone caused a humming sound.
麦克风的缺陷造成了嗡嗡的声音。
2
Scab. An imperfection in the form of a shell or veneer, generally attached to the surface by sound metal. It usually has its origin in an ingot defect.
结疤。通常由钢锭缺陷引起的、附着在完好金属表面上的薄壳状或镶片状缺欠。
3
The use of Wallman deforming circuit brings the merits of a good linearity and high-speed attribute while overcomes the defect of sound thinness caused by Wallman circuit.