NCEJ zoo li tus nqus sib nqus piav qhia
Daim duab uas muaj hlau nplaum sib nqus suav nrog peb hom kev sawv ntsug .: #, 2 #, 3 #
1 # qhov taw qhia yog qhov ua ke ntawm yim daim duab peb sab, ib sab yog tooj dag saum npoo, lwm sab yog yim kab saface.Hauv txhais tes tuav thaum siv, khaws tooj daj tuaj sab saud, yim kab sab saud poob qis, ze rau qhov chaw ua haujlwm, siv cov qauv nruam rau kev kuaj xyuas magneticx, nws tuaj yeem ua kom pom tseeb pom cov duab sib nqus thaum txau sib nqus.
2 # qhov taw qhia yog kev sib xyaw ntawm yim daim duab peb sab, ob sab yog tooj daj nto.xaws tes tuav thiab khaws cov tooj dag uas tsis yog lub ntsej muag, ze rau qhov chaw ua haujlwm, siv cov txheej txheem txuas ntxiv rau kev kuaj xyuas magneticx, nws tuaj yeem qhia meej kom pom cov duab sib nqus. thaum txau sib nqus.
3 # qhov taw qhia yog kev sib xyaw ntawm plaub daim duab peb sab, ib sab isbrass nto, lwm sab yog plaub xaim saum npoo, thiab ob puag ncig dots.hand txhais tes tuav thiab khaws cov tooj dag uas tsis yog lub ntsej muag, ze rau qhov chaw ua haujlwm, siv cov qauv nruam rau kev kuaj pom kev sib nqus, nws tuaj yeem ua kom pom tseeb pom cov duab sib nqus thaum tua cov hlau nplaum ncua kev kawm.Nws tuaj yeem tshawb xyuas seb puas muaj qhov khuam lub cuab tam, kev siv ntau yam kev ua haujlwm thiab kev ua haujlwm ntawm kev sib nqus hlau nplaum yog tsim nyog.Thiab kuj tuaj yeem kho qhov kev ncua deb ntawm lub npog thiab mos hlau, pom qee qhov tseem ceeb ntawm lub sib nqus teb, tom qab ntawd soj ntsuam cov kev txwv value.of ze cov tsis xws luag nto faus qhov tob muaj peev xwm.
