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timber tree相关的网络例句

查询词典 timber tree

与 timber tree 相关的网络例句 [注:此内容来源于网络,仅供参考]

The white Lauan, is often green the tree, bough Gao Erzhi, the timber framing is thick, the grain straightens out or the incline interlocks, easy dry and processing, also performance and so on nail, paint, agglutination all good; The pink lauan, the timber framing texture like white willow an, the diameter section pattern is also beautiful, but dry and the processing is difficult.

白柳桉,常绿乔木,树干高而直,木材结构粗,纹理直或斜面交错,易于干燥和加工,且着钉、油漆、胶合等性能均好;红柳桉,木材结构纹理亦如白柳桉,径切面花纹美丽,但干燥和加工较难。

Tall larch of western North America have pale green sharply pointed leaves and oblong cones; an important timber tree.

北美西部高大的落叶松属植物,浅绿色尖角树叶,椭圆形球果;重要的木材。

The most important fast-growing timber tree of the warm regions S of the Chang Jiang valley; it is propagated by seed, cuttings, or suckers.

The 最重要迅速增长暖和地区常江山谷的S的木材树种;它通过种子,切,或根出条被传播。

A Malaysian evergreen timber tree having large, round, yellowish, edible fruits.

面包果一种马来西亚的常青木材树木,结有大而圆的淡黄色可食果实

Tall New Zealand timber tree.

新西兰一种高大的木材。

Professor Luk said, the world's hazardous goods In fact, many timber tree species with different hazards, the role of different levels of its negative impact on the human body, the reaction varied symptoms.

陆教授介绍说,世界上有害商品木材树种其实很多,各有不同的危害,作用于人体其危害程度不同,反应症状也各异。

Efficiently the plant charcoal turns the stove makes use of the tree branch and discard the old timber, sawdust, the scraps of fiber crops ,bagasse , the pole of 秸 replaces the timber, making to take to sweep the energy charcoal with combustibility air, recover to replace the article wood tar petrolicly at the same time with the plant oil, use to do the chemical engineering raw material.

高效植物炭化炉利用树枝、废旧木材、锯屑、麻屑、蔗渣、秸杆取代木材,制取清洁能源木炭和可燃性气体,同时回收石油的取代品木焦油和植物油,用做化工原料。

Tasmanian timber tree with yellow aromatic wavy-grained wood used for carving and ship building; sometimes placed in genus Dacrydium.

塔斯马尼亚木材,黄色香木,波状纹理,用于雕刻和船舶制造;有时归入南洋杉属。

Tall-growing pine of eastern North America; bark is brown with longitudinal fissures when mature; valued as a timber tree.

北美东部一种高大的松树;成树树皮纵向裂开,呈褐色;木材。

Dead branches or knots in different sizes of tree was studied and different branch development phases of growth,suppression,death and self-pruning was analyzed to evaluate the effect that knot size and distribution impact on timber quality.Branch and knot dynamic models were developed using stand and tree variables.Based on multipleunit stepwise regression method, the individual tree growth model was established using forest and crown factors as the variable. The best taper equation model of Larix olgensis was bucking data of 130 sample trees selected in the studied area.

本研究以不同年龄、不同密度及不同立地条件的落叶松人工林作为研究对象,基于19块标准地中95株标准木的树干解析、枝解析及节子剖析数据,揭示了不同林分条件下林木的枝条数量及在树冠内的空间分布格局、生长发育规律;研究了不同大小树木的死枝和节子大小及其变化规律,分析了枝条的生长、被压、寿命和自然整枝过程,评价了节子大小和分布对木材质量的影响;以林分变量、林木变量和着枝深度等为自变量建立枝条生长和节子大小的动态预测模型;选择林分因子和林木的树冠因子作为竞争因子,用多元逐步回归的方法建立落叶松人工林与距离无关的单木生长模型,并根据研究地区选取的130株造材样木数据,建立了落叶松人工林最佳削度方程。

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