万一发生识别错误，只要踩下脚踏开关，就可以使指令消除。
In case a wrong recognition is made, the command can be cancelled by simply pressing the foot switch.
调制解调器没有接受发送给它的指令。验证该调制解调器是否接线正确并且打开了电源开关。
The modem did not respond to the command sent to it. Verify that the modem is properly cabled and powered on.
调制解调器没有接受发送给它的指令。验证该调制解调器是否接线正确并且打开了电源开关。
The modem did not respond to the command sent to it. Verify that the modem is properly cabled and powered on.
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