Yuav ua li cas lwv nrog ib tug marker? Qhov no yog qhov teeb meem tshaj plaws uas sawv daws ntsib. Lub cim yog sau rau ntawm daim ntawv dawb lossis ntawm cov khaub ncaws, thiab nws tsis tuaj yeem tshem tawm yog tias koj xav tshem nws. Ntawm no kuv muaj qee cov lus qhia los qhia rau koj.
Qee lub sij hawm nws tau raug sau rau ntawm daim ntawv dawb ua tus cwj mem dawb, lossis nws nyuaj rau kev tshem tawm thaum nws sau rau lwm yam. Yog hais tias nws yog sau rau ntawm ib tug du nto los yog ib tug whiteboard, koj muaj peev xwm siv ib tug whiteboard cwj mem (nyob rau hauv lub tuam txhab). Feem ntau, nws yeej ib txwm muaj.) Taug qab nws dua ntawm tus cim thawj, thiab tom qab ntawd siv daim ntawv lossis daim ntaub ntub dej. Nws yog qhov zoo dua los so nws tawm. Yog tias muaj cov cim, koj tuaj yeem sim ob peb zaug ntxiv. Raws li txoj cai, kuv kuj tuaj yeem qhia rau koj, vim tias Whiteboard cwj mem inks tag nrho muaj cawv, thaum cov cim feem ntau yog soluble hauv cawv. Qhov no yog qhov zoo sib xws uas tau kawm hauv chemistry, uas yog, kev sib haum xeeb.
Yog tias tsis muaj tus cwj mem whiteboard, muaj ntau ntau lwm txoj kev tshem tawm, koj tuaj yeem siv cawv (yog tias koj muaj), lossis tus ntsia thawv polish tshem tawm. Qhov tseeb, tus ntsia thawv polish tshem tawm yog qhov zoo heev rau kev tshem tawm txhua yam cim, thiab ntau dua 90 feem pua ntawm lawv tuaj yeem siv tau. Yog vim li cas yog tias tus ntsia thawv polish tshem tawm muaj acetone, thiab solubility ntawm acetone kuj muaj zog.
Tab sis yog tias nws sau rau ntawm cov khaub ncaws, nws yuav muaj teeb meem me ntsis. Cov khaub ncaws dawb tuaj yeem siv nrog 84 tshuaj tua kab mob. Cov xim lossis cov xim tsaus yuav tsis ua haujlwm, thiab cov khaub ncaws me me kuj tuaj yeem so nrog tus ntsia thawv polish remover. Yog tias muaj ntau, koj tuaj yeem yuav lub raj mis me me ntawm cov cawv hauv online. Nws tuaj yeem raug tshem tawm los ntawm kev ntxuav. Tsis tas li ntawd, feem ntau ntawm cov cim ntawm Mr. Wei Meng tuaj yeem raug tshem tawm. Cov inorganic acid ntawm "Mr. Wei Meng" yog hydrochloric acid (HCl), vim hydrochloric acid yog ib tug muaj zog acid, thiab nws yog ib qho yooj yim rau hydrolyze esters.
