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由于被测介质所含杂质和温度不易准确测定,其密度的精确值很难获得,同时操作上常常要求变送器指示液位与现场液位计指示一致,以有
Due to the measured medium containing impurities and temperature is not easy to accurately determine the exact value of its density is difficult to obtain, while the operation is often required to indicate the level of liquid level indicator transmitter and on-site instructions to