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PD877D-4X1，PD877D-4X2，PD877D-4X3，PD877D-4X4，PD877D-4X5，功率因數角度（相位表)數顯表
PD877D-4X6，PD877D-4X7，PD877D-4X8，PD877D-9X1，
PD877D-9X2，PD877D-9X3，PD877D-9X4，PD877D-9X5，
PD877D-9X6，PD877D-9X7，PD877D-9X8，PD877D-DX1，
PD877D-DX2，PD877D-DX3，PD877D-DX4，
PD877D-4X1，PD877D-4X2，PD877D-4X3，PD877D-4X4，PD877D-4X5，功率因數角度（相位表)數顯表