Taw Qhia Rau Cov Ntsiab Lus

Highlighter yog tus cwj mem uas tau tsim nyob rau xyoo tas los no. Nws siv cov number case tuab thiab sib dua los npog qhov tseem ceeb rau kev kos. Tom qab kos, nws tsis thaiv cov ntawv ntawm ib nrais muag. Lub highlighter muaj tus neeg sawv cev fluorescent. Thaum nws ntsib ultraviolet rays (hnub ci, fluorescent teeb, thiab mercury teeb ntau dua), nws yuav tsim cov nyhuv fluorescent thiab emit lub teeb dawb, uas ua rau cov xim zoo li dazzling thiab fluorescent. Nws yog feem ntau siv hauv chaw ua haujlwm thiab kev kawm.