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一、样品描述 所送样品型号为R51G(SGNEC).D.1—1 PCB和同型号的PCBA各两块(见图1),编号分别为R1~R2和F1~F2,委
First, the sample description Send the sample model is R51G (SGNEC) .D.1-1 PCB and the same type of PCBA each two (see Figure 1), numbered R1 ~ R2 and F1 ~ F2,