biphenyl diphenyl 联苯
Biphenyl-diphenyl ether mixture 联苯与二苯醚的化合物
Heating Method: (heat transfer) oil recirculation heating, biphenyl recirculation heating, electric heating of heat transfer oil, or electric heating of diphenyl.
加热方式：导热油循环加热、联笨循环、导热油电加热和联苯电加热可供选择。
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