THIS SERIAL NMBER IS WRONG是什么意思?

THIS SERIAL NMBER IS WRONG是什么意思? this serial port already opened是什么意思 this is not a valid serial number? the serial number is invalid是什么意思 the serial you entered is invalid是什么意思? serial是什么意思? Is there anything wrong with this sentence是什么意思 i have a serial number for this product是什么意思 this serial number appears to be ivalid是什么意思 serial 在计算机是什么意思 Serial propagation是什么意思? “serial number”是什么意思?