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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.

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。

The auspices of Nyaya Health to science and technology, Jilin Yongxing Wood, Guangzhou Veron environmental protection, Ao Siqi wood, three flowers Danfoss, the New World communications, exhibition design companies.

主持正理生能科技、吉林永兴木业、广州贝隆环保、奥斯奇木业、三花丹佛斯、新大陆通信等企业展览展示设计。

From the pith to the bark, vessel-elements proportion increased to the 9th ring, reaching the maximum, and then decreased; fiber proportion increased fluctuate, contrary to the ray proportion; and the parenchym proportion is in degression in juvenile wood, and increase by degrees in mature wood.

组织比量径向变异表现为从髓心向树皮方向，导管比量先增加至第9轮达最大值，以后降低；纤维比量呈波动性递增特点，与射线比量相反；枫杨轴向薄壁细胞比量径向变异主要表现为幼龄材由髓心向树皮方向递减，到成熟材以后又开始递增。

More-abundant axial parenchymatous cells and starch grains were observed in the opposite wood than in the reaction wood.

相较於反应材，对应材组织中含较高比例的纵向薄壁细胞及淀粉粒。

The main production of various craft healthá\ wood mirror \ pendants and other series, mainly boxwood / nanmu / ash / peachwood / Lei / gold wood, etc. refined form.

主要生产各种工艺保健木梳\木镜\挂件等系列，主要以黄杨木/楠木/白蜡木/桃木/梨木/金丝木等精致而成。

Two groups of wood(wet and air-dry wood) were tested to investigate the effects of flooding on the moisture content and ring width of Pterocarya stenoptera.

就淹水程度对2组枫杨材年轮宽度、含水率的影响进行研究。

The ginkgo pyroligneous liquor and the application thereof of the invention opens up a new orientation of the processing and using ginkgo wood, prompts the cultivation mode of ginkgo wood to develop into the orientation of constructing timberland used for high density in large acreage, shortening the felling cycle, solving the fear of troubles in the rear of farmers after planting ginkgo.

本发明开辟了银杏木材加工利用的新方向，促使银杏林的培育模式向大面积营造高密度用材林方向发展，缩短轮伐期，从而解决农民种植银杏的后顾之忧。

Wood could be liquefied into soluble reactive intermediates, which could further reactedwith phenol or by themselves. Phenolation and recondensation were a pair of competingreactions. Decomposition, phenolation and recondensation dominated the whole liquefactiondynamic process and determined the structural characteristics of liquefied wood.

4木材组分在液化过程中逐渐分解为较小分子量的液化中间产物，这些中间产物的活性较高，可以继续与苯酚或互相之间发生酚化或再缩聚反应，酚化反应和再缩聚反应是一对互相竞争的反应，降解、酚化和再缩聚三种反应主宰着整个液化动力学过程，也决定着液化产物的结构特征。

The resol phenol-formaldehyde adhesive could be prepared from liquefied wood (wood: phenol=1:2) in phenol at r(subscript F/P) 1.8, r(subscript NaOH/P) 0.7 and resinification temperature 80℃. The physical properties of the poplar three-layer plywood bonded with LWR were similar to those with normal PF resins and also satisfied the demands of I level. Free formaldehyde content of plywood (0.1 mg/L) was lower than the E0 level set by GB/T 9846-2004 Plywood.

结果表明，采用料液比为1：2的液化物，F1.8，r0.7，树脂化温度80℃条件下合成的杉木液化物树脂压制的杨木三层胶合板满足I类胶合板强度要求，各项物理力学性能与常规PF树脂压制的板材相当，板材的甲醛释放量为0.1mg/L，远低于GB/T 9846-2004《胶合板》中的E0级要求。

When theresin concentration exceed 10%,three types of recovery swelling experiment indicate that thetransverse compressive deformation was almost 100% fixed.The X-ray and FTIR spectra ofcompressive wood treated by PF show that the width of crystalline region and crystallinitywas hardly changed comparing with untreated wood;Esterified carbonyl degree at 1736cm-1and the end carbon degree of semicellulose at 897cm-1 increased.

当树脂浓度超过10％时，三种循环膨胀实验证明，木材横纹压缩变形几乎100％被固定。X-射线衍射谱图和FTIR光谱表明，PF预聚物处理后的压密材同素材相比，结晶区的宽度和结晶度几乎没发生改变；1736cm-1处酯化羰基峰强度增加，897cm-1处半纤维素异头碳(C1)峰强度增加。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。