电视系统转换器(Standards Converters)可转换视频信号由任一个世界上电视视频系统如NTSC, PAL & SECAM转换成任一电视视频系统。
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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。
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