A.低頻頻率檢測故障 B.上邊頻檢測故障 C.型號選擇條件故障 D.下邊頻檢測故障
A.23×0.15mm B.23×0.55mm C.46×0.15mm D.46×0.55mm
A.16×0.15mm B.16×0.55mm C.32×0.15mm D.32×0.55mm