Its lumber material is narrow for the alburnum, distributes in north compared to the south narrowly, light yellow arrives the yellow light yellow, the heartwood to brown brings slightly red; Has the resin, the durability is bad; The lumber texture, the density, standard natures and so on the festival receive the geography condition influence which grows, is widespread as a result of this lumber distribution, but therefore the lumber material the variation is greatly more obvious than because of the condition other tree seeds; The lumber weight is ordinary, solid.

其木材材性為邊材窄精品激情，分布在北部的比南部的更窄www.日本黄色网站在线看，淺黃到黃色，心材淺黃至褐色略帶紅色久久久久精品三级三级；有樹脂在线高清无码黄片，耐久性差性爱小视频欧美；木材的紋理、密度999国产精品欧美久久久久久、節(jié)子等格質(zhì)均受生長(zhǎng)的地理?xiàng)l件影響十八黄色网站，由于該木材分布廣泛，所以木材的材性因條件而變異大比其他樹種明顯一级A片免费在线；木材重量一般日本黄页网站免费观看，較結(jié)實(shí)。

From view of wood construction effecting, the article analyzes affecting factors of wood main micro-constructions such as tylosis and bored pits in processing of wood chemistry soaking with fire retardants, the article also analyzes existing condition of moisture in wood and relationship between moisture moving in wood and wood chemistry soaking technology treated with fire retardants.

從木材構(gòu)造對(duì)化學(xué)阻燃浸漬處理工藝影響的角度欧美婬片一级视频播放，指出在木材化學(xué)阻燃浸漬處理過程中欧美老妇乱又伦A片，影響阻燃劑在木材中滲透性的木材主要微觀構(gòu)造有浸提物、紋孔等免费看性顶级A片，分析了木材中水分的存在狀態(tài)和木材中水分的移動(dòng)與木材化學(xué)阻燃浸漬處理工藝的關(guān)系黄色网站一二三四五六。

Take DMSO swollen treatment and DEA-SO2-DMSO decrystallization treatment for example, the X-ray diffraction and the Tobolsky's intermittent stress relaxation of treated woods were determined during soaking in water, analyzed the effects of water on crystal degree and inter-cohesion of treated woods. According to these continuous relaxation curves measured in water with different temperatures, various thermodynamic quantities were obtained by using Eyring absolute rate theory, and reviewed the chemical reactions in wood which occur in different relaxation process. For the first time quantify these crosslinkings formed in the process of tensional relaxation by using the SMCIR intermittent stress relaxation way, and defined the cross-linking reaction types. In order to find out the contribute of drying to the fixation of deformation of chemically treated wood, stress relaxation of oven-dry untreated and treated wood was measured during the process of temperature elevation and descend, then analyzed the effect of temperature change on relaxation mechanism of treated oven-dry wood. According to continuous relaxation curves of oven-dry treated wood under various constant temperature, calculated the thermodynamics of relaxation process and discussed the mechanism of molecule change in wood, at the same time, also quantified these cross-linkings produced in wood by intermittent method and on the basis of which the model of molecular change during relaxation process of chemically treated was constructed.

以DMSO膨脹處理及DEA- SO2-DMSO非晶化塑化處理為例，測(cè)定了兩種處理木材在水浸漬過程中的X射線衍射及Tobolsky間歇應(yīng)力松弛精品偷拍日韩第一页视频，分析了水對(duì)處理木材結(jié)晶度及內(nèi)部凝聚力的影響久久器只；通過未處理和兩種處理木材在不同溫度水中的連續(xù)應(yīng)力松弛測(cè)定，應(yīng)用Eyring的絕對(duì)速度反應(yīng)理論計(jì)算并獲得了松弛過程中的各熱力學(xué)量激情狠狠文学网，分析了在水中松弛過程中不同階段木材內(nèi)部發(fā)生的化學(xué)反應(yīng)美女黄网址；并首次采用SMCIR連續(xù)·不連續(xù)雙曲線應(yīng)力松弛法定量了軸向拉伸應(yīng)力松弛過程中木材內(nèi)部產(chǎn)生的架橋量，明確了交聯(lián)反應(yīng)的類型激情说；為了了解干燥對(duì)處理木材塑性變形固定的影響久久99视频只有这里精品，測(cè)定了未處理和兩種處理絕干木材在溫度下降過程和上升過程中的應(yīng)力松弛，分析了溫度變化對(duì)處理絕干木材應(yīng)力松弛的影響日本免费高清视频www；根據(jù)多個(gè)溫度水平下的連續(xù)應(yīng)力松弛測(cè)定曲線国产精品久久视频，計(jì)算松弛過程的熱力學(xué)量，考察了絕干木材在松弛過程中內(nèi)部發(fā)生的分子變化機(jī)理狂插美女女阴道动态，同時(shí)也用間歇法定量了木材內(nèi)部新形成的架橋量，并在此基礎(chǔ)上構(gòu)筑處理木材在松弛過程中內(nèi)部分子構(gòu)造的變化模型91视频人妻。

Funalia gallica, Lenzites tricolor, Polyporellus brumalis, Pseudotrametes gibbosa, Pycnoporus sanguineus, tested their degrading ability to david poplar wood lignin, measured the lignin content change of david poplar wood after a period of time degraded by 6 wood rot fungi, which is the first study on the biodegradation mechanism of lignin by wood white rot fungi.

本項(xiàng)研究選擇了火木層孔菌及另外5種木材分解能力較強(qiáng)的闊葉樹上的白腐菌：粗毛蓋菌黄片爆草中文字幕、三色革裥菌、冬擬多孔菌免费毛片视频网站在线播放、偏腫擬栓菌和血紅密孔菌中文字幕-CaO|草榴神社，研究了它們對(duì)山楊木材木質(zhì)素的分解能力，測(cè)定了經(jīng)6種白腐菌分解一定時(shí)期的山楊木材木質(zhì)素的含量中国性交一级A片，作為木材白腐菌對(duì)山楊木材木質(zhì)素生物降解機(jī)制的初步研究香蕉五月天色，旨在為山楊木材生物制漿造紙?zhí)峁?yīng)用基礎(chǔ)理論研究，同時(shí)也可為木質(zhì)素合理的生物轉(zhuǎn)化為有用的化學(xué)品网页黄色网站可以看、生物漂白韩国a级电影在线观看、酶處理防止機(jī)械漿的返黃国产精品免费无码专区、廢水治理、纖維素酶解糖化的微生物前處理等提供相關(guān)的借鑒研究九九99久久精品国产麻豆，以期在生產(chǎn)實(shí)踐中減輕環(huán)境污染并充分利用木質(zhì)素資源在线观看免费无码A片视频。

Principle of least squares,digital image segmentation,digital image treatment and digital image identifying were applied into the research of wood science in this research,the wood cell image of annual ring from annual center to wood edge was analyzed,the modified level set method was applied to segmentate cell image precisely for the first time,the identifying of wood cells and hexagon simulation for wood cells were accomplished with active contour model,which had important potential application value in deepening the research of wood properties to a further step,moreover,had an important significance for improving comprehend on wood micro-properties and enlarging the applicable range of wood.

本研究將最小二乘原理、數(shù)字圖像分割无码秒播成人影视在线观看免费视频、數(shù)字圖像處理99爱精品1、數(shù)字圖像識(shí)別應(yīng)用于木材科學(xué)研究，分析了從年輪中心到木材邊緣的年輪的木材細(xì)胞圖像欧美口交网站，應(yīng)用改進(jìn)的水平集方法準(zhǔn)確分割細(xì)胞圖像狼友黄色视频，應(yīng)用活動(dòng)輪廓模型完成了對(duì)木材細(xì)胞的識(shí)別，并完成了木材細(xì)胞六角形仿真狼友色成人网在线播放视频网站免费，對(duì)木材材性的深入研究等領(lǐng)域中有重要的潛在應(yīng)用價(jià)值成人无码秒播在线观看视频免费下载，對(duì)提高木材對(duì)微觀性能認(rèn)識(shí)，擴(kuò)大木材的適用范圍快射视频在线播放网站，具有重要意義欧美全黄视频。

In the process of wood drying, because that the dry rate on the surface of wood is ten times than which inside, the moisture content of wood on the surface reduce to the fiber saturation point first, and begin to shrinkage, but the moisture inside content of wood is far higher than the fiber saturation point, the higher the standard criterion in wood drying, the more obvious of shrinkage.

摘 要：在木材干燥過程中，由于木材表面水分的蒸發(fā)速度比木材內(nèi)部水分移動(dòng)的速度大10倍左右www.天堂国产，因此木材表面的含水率首先降低到纖維飽和點(diǎn)久久国产精品特及毛片，并開始發(fā)生干縮，而此時(shí)木材內(nèi)部的含水率還遠(yuǎn)遠(yuǎn)高于纖維飽和點(diǎn)97午夜视频，干燥基準(zhǔn)越硬在线看国产黄av，這種現(xiàn)象越突出，木材發(fā)生開裂的可能性就越大亚洲a片综合。

The results indicated that,during MV drying,moisture distribution in wood was relatively uniform,without an obvious moisture content gradient along the direction of thickness of wood.Moisture distribution in wood was more uniform in the last period of drying.Above Fiber Saturation Point,the movement of moisture through wood was assumed to be permeable movement of free water and vapor under the action of pressure gradient;below FSP,moisture existing in vapor form in wood moved in response to a pressure gradient.Moisture transfer caused by heat diffusion and a moisture content gradient could be neglected.

研究結(jié)果表明：在微波真空干燥過程中又色又爽又舒服的视频，木材內(nèi)部的含水率分布比較均勻，在厚度方向沒有明顯的整體性含水率梯度精品美女视频在线观看www，特別是在干燥的后期欧美在线a免费观看，木材內(nèi)部的含水率分布更加均勻；當(dāng)含水率在纖維飽和點(diǎn)以上時(shí)精品日韩妖精视频网站在线播放，木材中的自由水和水蒸氣在壓力梯度的作用下以滲透流的形式在木材內(nèi)部遷移大学生一级一片第一次一级莫；當(dāng)含水率在FSP以下時(shí)，木材中的水分在壓力梯度的作用下以水蒸氣的形式向木材表面遷移亚洲欧美卡通图区丝袜；因熱擴(kuò)散国模高清、含水率梯度引起的水分遷移可以忽略不計(jì)。

But the timber price is higher, farmers\' harvest willingness is higher as famers hold the waiting attitude. Farmers want to harvest in the large forest plot and bad quality forestland. Other varibles results are sames as the above.In the end, the article puts forward some policy suggestions from three aspects to promote farmers to promote household to engage in forest management on the basis of above analysis.

之后亚洲无玛黄色视频在，利用Probit模型估計(jì)了農(nóng)戶木材采伐意愿的影響因素尤物成人高清在线观看网址大全，發(fā)現(xiàn)影響因素與木材決策的相似，但是木材價(jià)格與農(nóng)戶木材采伐意愿負(fù)相關(guān)深夜免费人妻一区91麻豆，在木材價(jià)格持續(xù)走高的形勢(shì)下人妻少妇视频一区中文字幕，農(nóng)戶持觀望態(tài)度一级黄色网站A片；林地地塊面積越大，農(nóng)戶采伐意愿越高亚洲国产aⅴ精品一区不卡；林地立地質(zhì)量越差午夜理伦电影在线不卡717，農(nóng)戶越想采伐，可能是想進(jìn)行低產(chǎn)林改造性爱A片；其他變量結(jié)論與木材采伐決策結(jié)論相同中文字幕无码永久无线无码。

Different cells,cell density and cell shape lead to comparatively great difference in wood properties and physical mechanical properties, change of wood cells affects change of wood properties including wood quality,wood property and all other aspects,and wood properties decide economic value and directly affect manufacturing and utilization of wood,therefore,the research and analysis on wood cell structure become especially important.

由于樹木生長(zhǎng)不均勻，使各種樹木的木材構(gòu)造具有多樣性禁16无码黄片，不同細(xì)胞體日韩精品牲交一区、細(xì)胞密度和細(xì)胞形狀導(dǎo)致了木材材性和物理力學(xué)性能存在較大差異，木材細(xì)胞的變化影響著木材性質(zhì)的變化拍拍欧美性爱，木材的性質(zhì)又決定木材經(jīng)濟(jì)價(jià)值在线视频cao，并直接影響木材的加工和利用，由此對(duì)木材細(xì)胞結(jié)構(gòu)分析研究就變得尤為重要欧美性影院。

According to the theory of stress-strain relationship of transverse compressive deformation and wood rheological character, it studies the factors about deformation permanent fixation caused by different methods, and analyzes the component change of wood cell wall caused by four physical treatment methods in this experiment. According to the newest research achievements, it is thought that the absolute release of deformation stress and the effective formation of cohesion inside wood are the main reasons of compressive deformation's permanent fixation.

根據(jù)木材橫紋壓縮應(yīng)力-應(yīng)變關(guān)系一级片在线观看电影、木材流變學(xué)特性等理論對(duì)木材壓縮及變形固定常用方法對(duì)形成變形永久固定的主要原因進(jìn)行了探討，根據(jù)前人對(duì)橫紋壓縮變形的永久固定理論及本實(shí)驗(yàn)中使用的四種物理處理方法在處理過程中對(duì)木材細(xì)胞壁基質(zhì)物質(zhì)的變化和表現(xiàn)出的力學(xué)特性的影響進(jìn)行了分析网站最国产2020最新，結(jié)合國(guó)內(nèi)外最新研究成果美女视频黄的全免费男人，認(rèn)為形成木材壓縮變形永久固定的主要原因是木材內(nèi)部變形應(yīng)力充分釋放和內(nèi)聚力的有效形成。

Exotic Hardwoods：新品種木材 ):村民采集木材速度更快

Sawmills ( 鋸木廠 ):村民采集所有種類的木材時(shí)速度更快 | Exotic Hardwoods ( 新品種木材 ):村民采集木材速度更快 | Establish Ironmonger ( 國(guó)立鐵器商人 ):村民從自然礦產(chǎn)挖金時(shí)速度更快

Exotic Hardwoods：新品種木材 ):村民采集木材時(shí)速度更快

Sawmills ( 鋸木廠 ):村民采集所有種類的木材時(shí)速度更快 | Exotic Hardwoods ( 新品種木材 ):村民采集木材時(shí)速度更快 | Silversmith ( 鐵匠 ):村民從自然礦產(chǎn)挖金時(shí)速度更快

Exotic Hardwoods：新品種木材 ):村民采擷木材速度更快

Sawmills ( 鋸木廠 ):村民采擷統(tǒng)統(tǒng)種類的木材時(shí)速度更快 | Exotic Hardwoods ( 新品種木材 ):村民采擷木材速度更快 | Establish Ironmonger ( 國(guó)立鐵器街市 ):村民從天然礦產(chǎn)挖金時(shí)速度更快

Exotic Hardwoods：新品種木材 ):村落民摘集木材速度更快

Sawmills ( 鋸木廠 ):村落民摘集全部種類的木材時(shí)速度更快 | Exotic Hardwoods ( 新品種木材 ):村落民摘集木材速度更快 | Establish Ironmonger ( 國(guó)立鐵器商人 ):村落民從自然礦產(chǎn)挖金時(shí)速度更快

Wood preservation：木料防腐,木材防腐,木材防腐處理

wood post 木柱 | wood preservation 木料防腐,木材防腐,木材防腐處理 | wood preservative 木材防腐劑,木料防腐劑

wood preservative：木材防腐劑,木料防腐劑

wood preservation 木料防腐,木材防腐,木材防腐處理 | wood preservative 木材防腐劑,木料防腐劑 | wood preserving oil 木材防腐油

xylotomy：木材解剖術(shù);木材切片術(shù)

木材剛性 rigidity of wood | 木材解剖術(shù);木材切片術(shù) xylotomy | 木材抗疲勞性 fatigue of wood

lumber kiln：木材干燥窯,木材烘干窯

lumber jack ==> 木材上垛裝置 | lumber kiln ==> 木材干燥窯,木材烘干窯 | lumber market ==> 木材市場(chǎng)

raft port：木材裝卸港;木材裝卸口

raft of timber 木排 | raft port 木材裝卸港;木材裝卸口 | raft port 木材裝卸口

timber load line：(裝運(yùn)木材的滿載吃水線)木材載重線

timber lining ==> 木襯 | timber load line ==> (裝運(yùn)木材的滿載吃水線)木材載重線 | timber loader ==> 木材裝載機(jī)