Boleng ba oli ea screw bo na le phello e matla ts'ebetsong ea mochini oa screw ente ea oli, oli e ntle e na le botsitso bo botle ba oxidation, karohano e potlakileng, foaming e ntle, viscosity e phahameng, khanyetso e ntle ea kutu, ka hona, mosebelisi o tlameha ho khetha oli e hloekileng e khethehileng ea screw. . Phetoho ea pele ea oli ke ...
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