Roj av muaj ib tug ignition point nyob ib ncig ntawm 400 degrees Celsius.
Nws tseem unignited tshwj tsis yog tias qhov kub no mus txog. Thaum mus txog qhov ignition point, roj av yuav spontaneously combust, txawm tsis muaj nplaim taws sab nraud.
Roj av muaj ib tug ignition point nyob ib ncig ntawm 400 degrees Celsius.
Nws tseem unignited tshwj tsis yog tias qhov kub no mus txog. Thaum mus txog qhov ignition point, roj av yuav spontaneously combust, txawm tsis muaj nplaim taws sab nraud.