Umbhobho odityanisiweyo weSpiral (umbhobho we-SSAW) luhlobo lombhobho wentsimbi yomthungo ojikelezayo owenziwe ngentsimbi yentsimbi njengesixhobo esikrwada, esidityaniswe yinkqubo yokuwelda i-arc ephindwe kabini emacaleni kwaye ikhutshwe kwiqondo lobushushu begumbi. Ubunjineli bokubonelela ngamanzi, ishishini lepetrochemical, ishishini lemichiza, i...
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