Tawg ntawm cov ntoo yog qhov qub

Hauv lub ntiaj teb tsis muaj cov ntoo ntov ntoo tsis tawg. Tej yam tawv cuag li hlau yuav xeb thiab xeb raws sijhawm, cia khoom ntoo. Yog li ntawd, tsis muaj ntoo uas tsis tawg. Txawm hais tias lub teeb ciav hlau thiab txuas hniav yuav tseg chaw rau kev nqes tes. Txawm hais tias cov khoom lag luam ntoo rooj tog ntoo tau qhuav rau ntau xyoo lossis ntau pua xyoo, nws yuav tsum tau ziab ua ntej kev tsim khoom. Txawm li cas los xij, nyob rau hauv qhov xwm txheej ntawm qhov tsis sib xws ntawm qhov kub thiab txias thiab tsis noo, yuav tseem muaj ntau qib ntawm shrinkage. Yog li ntawd, raws li cov rooj tog ntoo, nthuav cov pob qij txha yuav tsum tau sab laug saum npoo kom tiv thaiv tom qab tawg thiab deformation.