Oak Khoom Ntoo Round Rooj Sab Saum Toj

Oak rooj tog kom zoo dua ib qho: lub woodiness ntawm ntoo qhib rooj tog yog qhov nyuaj, ruaj ntseg yog qhov muaj zog, grain yog qhov yooj yim dua, cov rooj tog uas ua kom ruaj khov, yooj yim heev thiab zam. Cov rooj tog zaum nws heev - qib, tshwj xeeb haum rau European - rooj tog zaum. Muab tso rau hauv tsev kuj tshwm sim qib heev, mu Wen yog qhov tseeb meej zoo nkauj, nws yog jiao Jiao tus neeg hauv rooj tog.

Oak rooj tog kom zoo dua 2: ntoo qhib qauv yog tuab, xim thiab luster ntsiag to zoo nkauj, hnav-tiv taus, ntau ntawm cov khoom dai, rooj tog, hauv pem teb tos rau cov khoom siv, xaiv ua nrog ntoo qhib. Cov nqi hluav taws xob sib piv yog qhov dav, qhov nqus dej yog qhov muaj zog heev, kuj muaj kev txhim kho corrosion, nrog nws ua kom cov ntoo rooj tog ntoo zoo yog qhov zoo heev. Heev, kev pab lub neej kuj ntev heev, nrog preservation muaj nuj nqis.