I-1, ukusetshenziswa kokusebenza kwendebe: amanzi okuphuza, isitoreji samanzi, isitoreji, ukuhlelwa kwezimbali, ukukhulisa izinambuzane, ukukhulisa izinhlanzi, ukufaka ipeni, ukuxuba (ukufaka izinto enkomishini ukuxuba noma ukuthuthumela), kunomthamo;2, ukusetshenziswa kwengilazi yengilazi ye-optical properties: phansi kwendebe njenge-concave kanye ...
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