Its theory support is matter-element and extension set, and its logical cell is matter-element.

它的理论支柱是物元理论和可拓集合理论，其逻辑细胞则是物元。

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This part mainly includes the choice of signal source, antenna, network framework, and the allocation of logical cell, implements the effective network coverage of the underground tunnel.

该部分主要涉及信源、天线、组网方案的选择，以及逻辑小区的划分，实现对地下隧道的有效覆盖。

youdao

This part mainly includes the choice of signal source, antenna, network framework, and the allocation of logical cell, implements the effective network coverage of the underground tunnel.

该部分主要涉及信源、天线、组网方案的选择，以及逻辑小区的划分，实现对地下隧道的有效覆盖。

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