A . 频率0.66~1Hz,波宽0.1~0.5msB . 频率1~100Hz,波宽0.1~1msC . 频率0.66~1Hz,波宽0.01~0.2msD . 频率0.66~1Hz,波宽0.1~1msE . 频率2~160Hz,波宽0.1~1ms
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