n.基礎(chǔ)設(shè)施，基礎(chǔ)結(jié)構(gòu)，永久性基地，永久性防御設(shè)施 ‖ construction of infrastructure facilities基礎(chǔ)設(shè)施建設(shè) infrastructure of exhibition展館內(nèi)部結(jié)構(gòu) infrastructure facilities基礎(chǔ)設(shè)施 infrastructure development基礎(chǔ)設(shè)施 infrastructure project基建工程，基建項(xiàng)目