Ua ntej, cov rooj tog tuav yog hnav - tiv taus thiab ruaj khov, hnav {}}}}}}}}}}}}}}}}}}}}}}}}}} tsis kam thiab tsis muaj radacactivity.
Thib ob, cov duab zoo li huv thiab ci: nws yog qhov nyuaj kom npog lub npoo ntawm hmoov av.
Thib peb, nws yooj yim heev los tswj cov khawb: Yog tias kev khawb me me tshwm sim, koj tuaj yeem siv cov dej xuab tshuaj los txhuam cov tshuaj txhuam hniav thiab txhuam nws kom ua.
Plaub, cov tsos ntawm cov rooj tog tuav yog zoo nkauj heev: tus qauv nto yog tseeb thiab tsim nyog,
Qhov thib tsib, ntau yam yog qhov zoo - Nrhiav: kev ua lag luam, tsim khoom lag luam, tsim khoom lag luam thiab cov khoom lag luam kom tau raws li tus neeg siv cov qauv.
Thib rau, cov rooj tog ua ke yog qhov yooj yim rau nruab: Tus qauv sib txuas yam tsis muaj qhov sib txawv yog qhov tsim nyog, kev teeb tsa yog yooj yim thiab nws yog moodized.