短語詞組短語multicast backbone MBONE 多播骨乾MBONE E Multicast Backbone 多址傳播骨乾網(wǎng)mbone multicast backbone 多址傳播骨乾網(wǎng);多播主乾網(wǎng);多播骨乾網(wǎng)multicast backbone on the Internet 因特網(wǎng)多播基乾 返回 multicast backbone