SCM in each machine cycle sampling the input waveform, so SCM needs at least two machine cycles to detect a jump.

单片机在每个机器周期采样一次输入波形，因此单片机至少需要两个机器周期才能检测到一次跳变。

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Each of the four "sampling" areas takes one dry season to complete and then the cycle is repeated, so that each area is sampled once every four years.

在这四个“采样”区内的每一个地区进行的调查都要花一个旱季的时间，之后再重新开始这个循环，以便每四年完成一个区的调查工作。

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Sampling point number of every pulse cycle, instantaneous pulse frequency and period was gained with program operation.

经程序运算得到每个脉冲周期的采样点数，瞬时脉冲频率和周期。

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