Tau lub Laboratory box-hom hluav taws xob rauv kov ncaj qha tom qab siv?

Tsis yog, phab ntsa ntawm lub thawv-hom tsis kam rauv uas nyuam qhuav siv los tseem muaj qhov kub thiab txias heev. Thov tos kom qhov kub thiab txias poob ua ntej kov nws. Ua tib zoo saib xyuas kev nyab xeeb.