Thi-lî chhô-phêu ne-thúng

Thi-lî chhô-phêu ne-thúng (地理坐標系統) he yù kîn-thu lâu vî-thu chû-sṳ̀n ke yit-chak chhô-phêu-ne.

Khì-thâ ngî-ngièn

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