Lub ntsiab ntoo hom ntawm parquet
Jul 13, 2022
Khoom ntoo sib xyaw pem teb lub teb chaws tus qauv khoom ntoo pem teb lub ntsiab ntoo hom khoom ntoo sib xyaw pem teb nrog cov ntaub ntawv sib txawv, nws hardness, ntuj xim thiab kev ntxhib los mos kuj txawv heev. Khoom ntoo sib xyaw pem teb yog cov khoom siv kho kom zoo nkauj hauv pem teb tsim los ntawm kev ziab thiab ua cov ntoo. Cov khoom ntoo sib xyaw hauv pem teb muaj cov yam ntxwv ntawm cov qauv ntuj, xis nyob hauv ko taw thiab siv kev nyab xeeb. Nws yog ib qho khoom siv zoo tshaj plaws rau kev kho kom zoo nkauj hauv pem teb xws li chav pw, chav nyob thiab chav kawm. Cov hniav zoo nkauj ntawm lub teb chaws tus qauv khoom ntoo ntawm cov khoom ntoo sib xyaw pem teb yog rov qab mus rau qhov qub, nrog rau kev ntxhib los mos. Niaj hnub no, thaum cov kev pab them nqi hav zoov poob qis thiab kev tiv thaiv ib puag ncig tau txhawb nqa, cov khoom ntoo sib xyaw hauv pem teb tseem muaj nqi ntau dua. Cov khoom siv hauv pem teb tau muab faib ua peb qib: AA, A thiab B, thiab AA. Qhov zoo tshaj plaws.
