1. NIST measures the AC-DC difference of customer's thermal voltage converters by comparing them with standards composed of a thermoelement in series with a multiplying resistor.
   NIST测量客户的热电压转换器，用来和那些由串联热电偶和一个电阻相乘的AC-DC对比区别。
2. NIST测量客户的热电压转换器，用来和那些由串联热电偶和一个电阻相乘的AC-DC对比区别。
   NIST measures the AC-DC difference of customer's thermal voltage converters by comparing them with standards composed of a thermoelement in series with a multiplying resistor.

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