heartwood

Small tree of southern United States having dark red heartwood .

美国南部小型树种，深红色心材。

Effect of Extraction and Compression on Hygroscopicity of Chinese Fir Heartwood

抽提和压缩处理对杉木心材吸水吸湿性的影响

Cedar heartwood is also an excellent choice , at a bit less cost .

雪松心也是一个很好的选择，少一点成本。

' water heartwood ' of white birch in the north-east China

东北白桦的‘水心材’

A preliminary study on the characteristics of Larch heartwood polyphenols

落叶松心材多酚类抽提物特性初步研究

What can be said about the range of dates of the last heartwood rings ?

怎样描述最后的心材环的日期范围。

One must be able to differentiate between cambium and heartwood when buying furniture .

买家俱的时候，一定要分辨边材和心材。

Inhibitory Effects of Heartwood Extracts from Strong Decay-resistant Tree Species on Wood Preservation

强耐腐性树种心材提取物对木材防腐作用的研究

The Effective Components Extraction and Antifungal Test for the Heartwood of Platycladus orientalis

侧柏心材活性成分的提取及其抑菌性能

Objective : To study the chemical constituents in the heartwood of Taxus cuspidata .

目的：研究东北红豆杉心材的化学成分。

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。

Possible reasons for the reduced relative durability of extracts visa vis native heartwood were advanced .

本土树种的心材提取物相对持久力的减少的可能原因是复杂的。

It is important to note , color in this explanation refers to sapwood and heartwood .

重要的一点说明是，这里的颜色是指边材和心材的颜色。

Reddish-brown wood and lumber from heartwood of the sweet gum tree used to make furniture .

红棕色木料，取自香枫心材，用于制家具。

Liquid transport between adjacent vessels is possible in sapwood , but not in heartwood .

但心材和边材的行为有所不同：边材中的水份可在相邻脉管间迁移，但在心材中则不可能。

Sapwood contains xylem vessels , but not as strong as heartwood .

边材含有木质导管，但不如中心木质那样坚硬。

The sapwood is yellowish with a hard and heavy heartwood .

边材微黄色，心材坚硬而且沉重。

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

The Current Heartwood Rotten Situation of Living Individuals of Larix Gmelini and the Managing Countermove

兴安落叶松立木心材腐朽现状及经营对策研究

Up-take of sapwood was obviously higher than that of heartwood .

边材上染率明显高于心材。

The result showed that the density losses of the samples from the two trials were different along with the different rot time of the heartwood .

两个试验林样品腐朽处理时间不同，样品密度损失差异显著。

The oven-dried density of okan heartwood and sapwood decreased slightly after heat treatment .

热处理后，圆盘豆心边材全干密度稍有下降。

The Effects of Several Mediums and Fungi on the Decay Resistance of Pinus Yunnanensis Heartwood Rotted in Different Levels

不同腐朽程度的云南松心材用不同培养基与菌种进行的耐腐性试验研究

PH Value , Buffer Content and the Content of Chemical Components Between Heartwood and Sapwood in Poplar 72 and Poplar 69

72和69杨心边材pH值、缓冲容量及化学成分含量的研究

The analysis of chemical component showed that the lignin content of solid material was lower , but the carbohydrate content of solid heartwood was higher .

化学成分分析表明，实心材的木素含量较少，碳水化合物含量较高。

In the durable species , decay resistance decreases incessantly from the outer heartwood to the pith .

在耐腐树种中，其耐腐力从心材的外缘到髓芯逐渐降低。

On the basis of this , the relationship between concentrations of stilbenes in the samples and the heartwood resistant ability was studied .

并在此基础上，研究木材中细胞次生代谢产物&二苯乙烯类化合物的含量与木材对真菌腐朽耐受性的相关性。

The permeability of sapwood of both air dried and the solvent exchange dried specimens were bigger than the 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 sapwood of most species is more susceptible to fungal attack than the heartwood with its higher extractive content .

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 greatest variation takes place in the volume contractive rate of the heartwood , collapse factor and collapse depth of the sapwood .

子宫内安放的避孕环（缩写为IUD）心材的体积收缩率、边交界材的皱缩因子和皱缩深度变化最大。