MHYV MHJYV 4/0.28 MHY 1/0.8 MHYA32 矿用通信电缆MHYV–5×2×1/0.97 矿用通信电缆MHYV–5×2×1/0.97 a b 20 20 矿用通信电缆MHYV–5×2×1/0.97 zui
