Cov khoom siv iav

1. Soda txiv qaub iav: cov khoom tseem ceeb yog silicon dioxide, sodium oxide thiab calcium oxide

Qhov tsis zoo: Cov dej kub kub yog qhov yooj yim tawg, thiab qhov kub yuav tsum qis dua 90 degrees

2. Cov khoom siv boron silicon siab: nws muaj npe vim muaj cov ntsiab lus siab ntawm boron oxide.Feem ntau siv nrog tshuaj yej teeb thiab cov cuab yeej dej, tiv taus kub thiab yuav tsis tawg

Disadvantages: lub khob yog nyias thiab tsis muaj kev ntxhib los mos

3. Cov khoom siv iav siv lead ua: Muaj ob hom txhuas siv lead ua iav thiab cov iav tsis muaj hlau lead.Cov khoom siv lead ua tag nrho nrog 24% txhuas lossis ntau dua yog hu ua cov hmoov lead, thiab cov iav tsis muaj hlau lead uas muaj tsawg dua 24% txhuas.

Qhov zoo ntawm cov iav siv lead ua: lub suab zoo, zoo thiab meej

Disadvantages: kim!Yog tias cov ntsiab lus ntawm cov hlau lead yog siab, kev siv mus sij hawm ntev tsis zoo

Txawm li cas los xij, tam sim no, glassware tsuas tuaj yeem nkag mus rau hauv kev ua lag luam los ntawm kev tshuaj xyuas zoo thib peb, thiab tsis tas yuav tsum muaj tangled dhau.