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边材为黄白色。The sapwood is yellowish white.

边材易于保存,但是硬材不易保存。The sapwood is easy to preserve but not the hardwood.

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边材为粉红色,心材为粉红褐色。The sapwood is pinkish and the heartwood pinkish-brown.

心边材区别不明显,材色栗褐色。Heart sapwood distinction was not obvious, chestnut brown.

边材含有木质导管,但不如中心木质那样坚硬。Sapwood contains xylem vessels, but not as strong as heartwood.

边材上染率明显高于心材。Up-take of sapwood was obviously higher than that of heartwood.

边材色泽较浅,是从树皮到新材之间的木质部分。Sapwood is the lighter colored wood growing from inside the bark to the heartwood.

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心材通常是成熟的木材部分,通常色泽较暗,范围从边材一直到髓心。Heartwood is the mature wood, which is often darker, extending from the sapwood to the pith.

每个生长周期都有一或多层活的边材细胞转变成心材。One or more layers of living and functional sapwood cells are periodically converted to heartwood.

每个生长周期都有一或多层活的边材细胞转变成心材。皮层细胞开始分裂。One or more layers of living and functional sapwood cells are periodically converted to heartwood.

气干材和溶剂置换材的边材渗透性均大于对应的心材渗透性。The permeability of sapwood of both air dried and the solvent exchange dried specimens were bigger than the heartwood.

大多数树种的边材要比含有教高抽提物含量的心材更易受真菌的侵害。The sapwood of most species is more susceptible to fungal attack than the heartwood with its higher extractive content.

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在树冠内,树干边材断面积生长量与其上部的枝条边材断面积生长量大致相等。In the tree crown, the basal area growth of trunk sapwood is approximately equivalent to that of the upper branch sapwood.

心材的体积收缩率、心边交界材的皱缩因子和皱缩深度变化最大。The greatest variation takes place in the volume contractive rate of the heartwood, collapse factor and collapse depth of the sapwood.

研究长白鱼鳞云杉、臭冷杉的木材及其抽出物化学组成,并分析生材与气干材、心材与边材中各种化学组成变化的规律。In this work main chemical changes between green wood and air dried wood, heartwood and sapwood in their extractives of Picea jezoensis var.

新疆杨一年生枝、多年生枝、心材和边材的离子分布年内动态相似,叶和根有各自独特的特点。The dynamic regularity was similar in one year branches, many year branches, heartwood and sapwood , leaves and roots had their own characters.

有时就像北方白宫雪松和东欧雪松。白宫雪松的边材是白色的,而日薄,而心是一种浅棕色。Sometimes known as Northern White Cedar and Eastern White Cedar, the sapwood of white cedar is thin and white, while the heartwood is a light brown.

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核桃木的白木质为奶白色,心材则为浅棕至棕黑色,偶有带紫色的出裂纹及较深色条纹。The sapwood of walnut is creamy white, while the heartwood is light brown to dark chocolate brown, occasionally with a purplish cast and darker streaks.

用分形理论解释边材转变为心材时所发生的某些特性变化,认为木材细胞壁自身超微分形构造的变异也是其中的原因之一。Fibrillar units in heartwood have a higher fractal degree that shows fractal fibrils also change immediately along with wood turning sapwood into heartwood.

研究长白鱼鳞云杉、臭冷杉的木材及其抽出物化学组成,并分析生材与气干材、心材与边材中各种化学组成变化的规律。In this work main chemical changes between green wood and air dried wood, heartwood and sapwood in their extractives of Picea jezoensis var. komarovii and Abies nephrolepis are studied.