point to multipoint groucall ptm-g的意思|示意
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点到多点组呼叫ptm-g
point to multipoint groucall ptm-g的网络常见释义
点对多点群呼 ... 地理区域群呼 geographical area groucalls; geographical area group calls 点对多点群呼 point to multipoint groucall ptm-g 强化群呼系统 enhanced groucall system ...