deciduous tree是什么意思

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用法例句

The osmolarity of larch wood under normal temperature;

常温下落叶松材的渗透性

To improve the permeability of larch wood,high intensive microwave irradiation was applied to wood.

采用高强度微波辐射落叶松木材,将微波处理的木材试件与未处理试件在相同的条件下进行加压注水试验,测定吸水增重率(WAR),用于评价木材的渗透性。

The objective of research is to set up a new technology for the deresination of larch wood which is modified by the method of microwave-cell-explosion.

微波细胞爆破法改性落叶松木材的脱脂技术以探索建立落叶松木材脱脂新技术为目标,其基本原理是:高含水率(30-60%)的落叶松生材,在高强度微波场中,木材中水分子被极化并迅速旋转、相互摩擦、生热汽化,细胞内的蒸汽压力迅速增高,破坏木材细胞壁上的纹孔膜等细胞薄弱组织,形成新的流体通道,从而使落叶松木材的渗透性得到较大地改善。

Larch wood resource is abundant in China.

但是由于其渗透性差、内应力大，导致难于干燥、容易开裂和变形，此外还有树脂含量高的缺点，给其干燥、保护处理等加工带来了很大的困难，因此目前落叶松木材主要以原木的形式用于建筑、矿业等行业以及用于造纸，利用价值很低。

The Study on the Dynamic Characteristics and Influencing Factors in Larch Wood;

落叶松材动态特性及其影响因素的研究

The wood of these trees.

落叶松木这种树木的木材

Research on the Drying Characteristics of Dahurian Larch Lumber from Russia;

俄罗斯产落叶松锯材干燥特性的研究

Research on the Growth and Pulpwood Properties of Different Provenances of Larix Olgensis Henry

不同种源长白落叶松生长与纸浆材材性研究

Effects of Provenances on Growth Characteristics of Sapwood and Heartwood of Larix gmelinii Trees

兴安落叶松边材心材生长特征的种源效应

Effects of Sawing Methods on Dimensional Lumber Recovery and Quality

下锯法对落叶松规格材出材率及质量的影响

Design of Larch Glued Laminated Timber Drying System and Its Control Analysis

落叶松集成材木材干燥系统设计与控制分析

On the Long-Term Productivity Maintenance of Monoculture Olga Hay Larch Timber Forest in Northeastern China

长白落叶松人工用材林长期生产力维持的研究

Deresination of Larch Wood Modified by Microwave-Cell-Explosion;

微波细胞爆破法改性落叶松木材的脱脂技术

Study on Drying Characteristic of Small-diameter Dahurian Larch and Ussuri Poplar;

小径木落叶松和大青杨锯材干燥特性的研究

Study on the Effect of Larix Olgensis Extract on Wood Preservation;

长白落叶松提取物对木材防腐作用的研究

Study on Bonding Technology of Larch Structural Glulam;

落叶松结构用集成材胶合工艺技术的研究

Classification by Appearance of Larch Sawn Timber and Study on Stress Wave Inspection Tests

落叶松锯材外观分等与应力波检测试验的研究

Preliminary Report on Cultivated Effect of Small-Medium Diameter for larix kaemferi (Lamb.) carr.in the South

南方日本落叶松中小径材培育效益初报

Study on Extraction of Volatile Oil from Larch Wood by Supercritical Carbon Dioxide

超临界CO_2萃取落叶松木材挥发油的工艺研究

Ground Diameter Volume Table and Reasonable Density Management of Larix gmelinii Stand

落叶松人工林根径材积表和合理经营密度研究

Tension Performance of Dahurian Larch Lumber Joints Connected by Truss Plates

兴安落叶松规格材齿板连接节点的拉伸性能

Research on Classification by Appearance of Larch Timber and Vibration Inspection Tests

落叶松锯材外观分等与振动检测试验的研究