Pele, litšobotsi: 1, matla a phahameng, toughness phahameng, khanyetso e phahameng creep, torque e phahameng: e sebetsang ho fittings phala, manonyeletso, 'mele ea belofo, joalo-joalo ka likhoele ba bang ba ka hare bakeng sa tšehetso le tšireletso. 2, ho hanyetsa mocheso o phahameng, ho hanyetsa hydrolysis, ho hanyetsa UV: lisebelisoa tsa bongaka ...
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