Designed by
Title
113 31. Waveform_ The shape or pattern of a wave, determine by #318177674
Description
113 31. Waveform_ The shape or pattern of a wave, determined by its frequency, amplitude, and wavelength., isolated on white background, photo. ÃË÷þñÃâ¬Ã°Ã¶ÃµÃ½Ã¸Ãµ 1