求翻译：主要是指无线基础设施的建设：对于学校内部，自上海中学无线校园网建立以来，我国校园网建设进入从有线网络到无线校园网转变，目前无线校园网络已覆盖大中小学，对无线教育应用支持良好。是什么意思？

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Main is the wireless infrastructure-building within the school for secondary schools, from Shanghai wireless campus network since its inception, our campus network-building from the wired network access to the wireless campus network, the wireless campus network has been covering the middle schools

Mainly is refers to the wireless infrastructure the construction: Regarding the school in, since the Shanghai Middle school wireless campus net establishment, our country campus net construction has entered from the wired network transforms to the wireless campus net, at present the wireless campus

Mainly refers to the construction of the wireless infrastructure: schools, wireless campus network of Shanghai high school since its inception, the construction of campus network in China into the transition from a wired network to a wireless network, the current wireless network coverage in primary