wood properties 中文意思是什麼

Peat tar has similar properties to the tar derived from the destructive distillation of wood.

泥煤焦油的性質和由木材幹餾所得到的焦油的性質相似。

Wood - based panels - determination of edgewise bending properties

木基板材.邊沿彎曲性能的測定

Study on planting density affecting of the wood properties of masson pine

馬尾松木材在高溫乾燥中的水分擴散性

It is that the masson pine has the highest hydrophilic properties and the chinese fir wood / plastics composites have the best water - resistant properties

因此，馬尾松一塑料復合材料的界面耐水性能較差，而杉木一塑料復合材料界面的耐水性能較好。

Effects of fertilization on growth increments and wood physical - mechanical properties of young slash pine

施肥對濕地松幼林生長和木材物理力學性質的影響

For understanding thermal stabilities of woo - montmorillonite ( mmt ) composite ( wmc ), thermal properties of wood, wood - phenol formaldehyde resin composite ( wpc ) and wmc were analyzed and compared using thermal analysis ( ta )

摘要為了了解木材蒙脫土復合材料的熱穩定性，本文利用熱分析方法對木材、木材酚醛樹脂復合材料、木材蒙脫土復合材料進行了對比分析。

The major achievements are : 1 the extraction of the burning oil of biomass from wood tar by distillation without any other goods of chemistry, in this case no effect to the physical properties of the burning oil of biomass

本課題的主要研究成果如下： 1採用直接蒸餾方法從木焦油中提取其可燃成分（簡稱生物質燃油） ，不加入其他任何化學物品，這樣不會影響生物質燃油的物理性能。

Standard test methods for establishing allowable mechanical properties of wood - bonding adhesives for design of structural joints

確定結構連接設計用木材膠粘劑允許機械性能的標準試驗方法

The recombinants were constructed by transforming ppic9 a - xynb into p. pastoris gs115. the assay results revealed that the xylanase gene xynb was overexpressed and secreted effectually in p. pastoris. in 3l fermentor the expression level of xylanase xynba exceeded 1200iu / ml and the expressed xylanase had normal bioactivity. the molecule weight of xynba was determined as about 31kd which is higher than 23kd of original enzyme xynb from streptomyces olivaceoviridis a1. xynbb was gotten by deglycasylation of xynba, whose molecule weight returned to 23kd. we comparised the enzymatic properties of xynba expressed in p. pastoris, xynbb deglycasylated from xynba and xynb produced from streptomyces olivaceoviridis al : there was little difference among the three enzymes on optimal ph, the optimal ph of xynb and xynba were both 5. 2, the optimal ph of xynbb was 5. 0 ; the optimal temperature of xynb and xynba were both 60 c, while the optimal temperature of xynbb was 50 ? ; because of glycosylation the thermal stability of xynba was better than xynb and xynbb ; the specific activity of xynba and xynbb were 883. 88iu / mg and 832. 5hu / mg respectively, which were both lower than 2814. 45iu / mg of xynb ; the km values of xynb and xynba were similar to each other which were 21. 56 ( g / kg ) and 20. 87 ( g / kg ), while the km value of xynbb was 27. 10 ( g / kg ) ; the fmax of xynba and xynbb were 4568umol / mg. min and 5329umol / mg. min respectively which were lower than 27623 umol / mg. min of xynb ; additionally all of the three enzymes did not display cellulase activity. they all had well resistance to pepsion and trypsin, and were not sensitive to metal iron, surface active agent and chelating agent. the analysis of different xylans enzymatic hydrolysate revealed : by xynba, that the main constitutions of enzymatic hydrolysate of birch wood xylans were xylotriose and xyloquaiose, which account for 68. 43 % and 16. 50 % respectively, additionally there was 11. 79 % of xylobiose ; the main constitutions of enzymatic hydrolysate of corncobs xylans were xylobiose and xylotriose, which account for 81. 78 % and 11. 55 %. the result indicated that this xylanase was a kind of 1, 4 - b - d - xylanohydrolase and was fit to used in industrial procession of xylooligosacc harides

進一步對xynba進行了脫糖基化處理得到xynbb ，其分子量恢復到23kd ，證明xynba是糖基化蛋白。通過對畢赤酵母重組表達的木聚糖酶xynba 、脫糖基化的木聚糖酶xynbb以及橄欖綠鏈黴菌a1所產原酶xynb之間酶學性質的比較發現：三種酶的最適ph差異不大， xynb和xynba均為5 . 2 ， xynbb為5 . 0 ； xynb和xynba的最適溫度均為60 ， xynbb降為50 ：在耐熱性上， xynba由於糖基化作用熱穩定性明顯高於未糖基化的xynb和xynbb ； xynba和xynbb的比活性分別為883 . 88iu mg和832 . 51iu mg ，明顯低於原酶的比活2814 . 45iu mg ； xynb和xynba的km值相當，分別為21 . 56 （ g kg ）和20 . 87 （ g kg ） ，而xynbb的km值較大為27 . 10 （ g kg ） ； xynba和xynbb的vmax相差不大，分別為4568 mol mg ? min和5329 mol mg ? min ，明顯低於xynb的27623 mol mg ? min此外三種酶均無纖維素酶活性，對胃蛋白酶和胰蛋白酶有很好的抗性，且對作用環境中的各種離子、表面活性劑、螯合劑不敏感。通過對不同木聚糖的酶解產物的糖份分析發現：以樺木木聚糖為底物時，酶解產物主要為木三糖和木四糖，含量分別為68 . 43和16 . 50 ，另外還含有11 . 79的木二糖；以玉米芯木聚糖為底物時，酶解產物主要為木二糖和木三糖，含量分別為81 . 78和11 . 55 。

Wood - based panels - determination of edgewise bending properties ; german version en 13879 : 2002

木基板材.沿邊彎曲性能的測定;德文版本en 13879 : 20

Mechanical properties of castanopsis hystrix and betula alnoides plantation wood

紅錐和西南樺人工林木材力學性質的研究

Timber structures - test methods - determination of mechanical properties of wood based panels

木結構.試驗方法.木基護墻板機械特性的測定

The basic properties of wood such as moisture content, density, grain direction and modulus of elasticity can be measured nondestructively

摘要與木材材質有關之因數如含水率、比重、木理走向、彈性系數等可藉破壞或非破壞方法來測定或推定。

Although the wood has good technical properties, the quality of lumber produced is not high.

雖然此木材具有好的加工性能，但所生產的板材質量不高。

Standard practice for sampling forest trees for determination of clear wood properties

無節疤木材性能測定用林材樹取樣的標準規范

" one of the most important products of the forests of aerenal, densewood is a strong, hard heavy wood similar to iron in its properties.

鐵木：鐵木是產自阿爾而娜爾森林的主要木材，這種堅硬沉重木材可以代替普通的鐵來製作物品。

Association analysis between ssr molecular markers and wood properties of populus nigra

標記與歐洲黑楊材性性狀的關聯分析

Using the residues from wood conversion of acacia and eucalyptus species as material, the molded decorative particleboard products were manufactured by two - stage process and the relationship between process parameters and properties of products were studied in this paper

摘要以相思、桉樹2樹種的木材加工剩餘物為原料，研究兩步法刨花模壓板的製造工藝以及各工藝參數與板材性能的關系。

Genetic variation in growth and wood properties of f1 progenies of eucalyptus urophylla e. grandis

1子代生長和材質性狀遺傳變異性研究

Near infrared ( nir ) spectroscopy is an advanced analysis tool for nondestructive evaluation, which can be quickly, accurately to estimate wood properties

近紅外光譜技術是一種新的無損評價方法，能夠迅速、準確地對木材試樣的性質進行預測。