2025-11-01 21:23:47 The signal simulator that can produce single-frequency pulses and M code signal provide for the use of acoustic profiler debug., 该信号模拟器即能够产生单频脉冲信号又可以产生M序列编码信号，以便提供给声学剖面仪调试使用。 In ...

When binding, the document hasn't been put trimly that make some paper haven't been bound., 装订时，文件没有放整齐，出现漏订的情况。