好用的函数信号发生器，能产生多种波形，例如，正弦波，方波，锯齿波，阶梯波。-Useful function signal generator, can produce a variety of waveforms, for example, sine wave, square wave, sawtooth, wave ladder.

正弦波信号发生器报告（含工作内容，步骤和图形）-Sine wave signal generator reports (including work, steps and graphics)