Ngokwenhloso kanye nesikhathi sokusetshenziswa, sinezigaba ezihlukene namagama ezibani eziphakeme.Isibonelo, izibani ze-wharf zibizwa ngokuthi ama-wharf high pole lights, futhi lawo asetshenziswa ezikweleni abizwa ngokuthi ama-square high pole lights.Inkundla yebhola lezinyawo ukukhanya kwensika ephezulu, ukukhanya kwe-port high mast, isikhumulo sezindiza...
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