论文部分内容阅读
麻栎、栓皮铄、楠栎、槲树、白栎五种栎木为环孔材,具宽、细两种射线。薄壁组织环管和带状。麻栎和栓皮栎心材带红色,且具大量侵填体,称麻栎类;槲栎、槲树和白栎木材非红色,无侵填体或很少,称槲栎类。两类栎木气干密度均属重的一级;弦径干缩比麻栎类为大级,槲栎类为中级;木材顺压,麻栎类为高级,槲栎类为中级;抗弯强度均属甚高级,硬度为硬至甚硬,冲击韧性为高级;两类木材强度性质与质量系数都是高的一级。表明五种木材强度大,质量高,弹性好,但自然干燥易变形、开裂。
Quercus, Quercus mongolica, Nan Qiu, Quercus, white oak five oak ring ring material, with wide and fine two kinds of rays. Parenchyma loops and ribbons. Oak and cork oak heartwood with red, and a large number of tillage, said oak; oak, oak and white oak wood non-red, no tundish or rarely known as oak oak. The dry density of the two types of oaks is heavy; the dry shrinkage ratio of string diameter is large, Quercus oak is middle grade; The strength is very advanced, the hardness is hard to very hard, impact toughness is advanced; two types of wood strength properties and quality factors are high level. Five kinds of wood showed that the strength, high quality, good elasticity, but easy to deform and dry naturally.