Dej kom paub tias: nyob hauv ib lub thoob dej rau hauv ib lub hnab yas, cov yas hnab rau dej thaum tus uas tsis yog-mob toxic, thiaj mam li tawm; thiab lom hnab rau floating yuav tsis yog.
Tes-so txoj kev kom paub tias: kov yas, lubrication hnov los ntawm tus mob toxic; mob toxic otherwise.
Jitter txoj kev kom paub tias: tus yas ib, tawv ncuav pias, tawm suab crisp uas nws tuav zoo; mob toxic otherwise.
Hluav taws kom paub tias: koj yuav tau txiav ib sab ntawm koj lub hnab ntim, muaj hluav taws kub, combustion lom no tsis yog ib qho yooj yim; Nws yog cov mob toxic, yooj yim mus hlawv taws.
