| Cov ntsiab lus | Square iav Magnets |
| Muag Cov Ntsiab Lus | Txaus nyiam thiab tsim nyog tus nqi ntawm cov square iav hlau nplaum |
| Nta | Square zoo, me me rau kev siv yooj yim, cov ntsiab lus nrov |
| Kev siv | Sib nqus adsorption |
| Tsis muaj | 30 hli |
| Daim ntawv pov thawj |
