短语词组短语Heartbeat failure detector 心跳故障检测器Irregular heartbeat detector 可进行心率不齐探测;心率不齐探测器Ultrasonic Doppler foetal heartbeat detector 超声多普勒胎儿心率仪trasonic Doppler foetal heartbeat detector 超声多普勒胎儿心率仪 返回 heartbeat detector