They convert units of heat into useable engineering units that serve as input signals for process controllers and recorders.
他们将热量单位转换成可用的工程单位，作为过程控制器和记录器的输入信号。
They convert units of heat into useable engineering units that serve as input signals for process controllers and recorders.
他们将热量单位转换成可用的工程单位，作为过程控制器和记录器的输入信号。
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