A.射頻信號(hào)防雷 B.GPS信號(hào)防雷 C.控制信號(hào)防雷 D.電源供電防雷
A.12,60,12,10 B.8,60,8,5 C.12,60,12,5 D.8,60,8,10
A.20mm B.30mm C.50mm D.80mm