查询词典 compressed wood

The paper carries on qualitative analysis to the acetone extractives before and after discoloring, shows the main components of the extractives and then takes comparison. The results shows :①The hydroxyl is oxidized and then shifted to the carbonyl,carboxyl, ester and ketone groups during inducing discoloration under the pretreatment conditions,which makes the wood color deep;② There are plenty of auxochromic groups in the acetone extractives of silver chain, the interaction between the auxochromic groups and the chromophoric groups makes the wood color deep.

摘 要：本文通过对刺槐变色前后丙酮抽出物的定性分析，得出变色前后丙酮抽出物的主要成分，进行对比分析，初步得出抽出物对诱发变色的作用为：①变色前后羟基在预处理条件下氧化成羰基，羧基，酯基和酮基等官能团，使木材颜色加深；②刺槐丙酮抽出物的主要成分中含有大量助色基，这些基团会与木素中的发色基团相互作用，使木材颜色加深。

The hydroxyl and carboxyl, belonging to auxochromic groups, were oxidized into the carbonyl and ester groups, belonging to chromophoric groups, during inducing discoloration under the pretreatment conditions, which makes the wood color deeper. There were plenty of auxochromic groups and chromophoric groups in the acetone extractives of silver chain. The interaction between the auxochromic groups and the chromophoric groups made the wood color deeper.

结论］羟基、羧基等助色基团在预处理条件下氧化成羰基、酯基等发色基团，使木材的颜色加深；刺槐木材丙酮抽出物的主要成分中含有大量发色基团和助色基团，这些基团间的相互作用使木材颜色加深。

At present but endowment the lumber resource that use basically has balata wood and eucalyptus wood.

目前可资利用的木材资源主要有橡胶木和桉木。

May be called: Hanshi of solitary wood products ---- Huang Yang Tai ShiyiCyclovirobuxine said Buxaceae wood for the plants, growing season is very long, no Daliao,"Millennium dwarf," said.

可称为：罕世之孤品----黄扬木太师椅黄杨木为称黄杨科植物，生长期很长，无大料，有&千年矮&之称。

The reddish wood of certain tropical trees or shrubs in the pea family, especially a Brazilian tree Caesalpinia echinata, whose wood is used for violin bows and as a source of a red or purplish dye.

巴西苏木某些豆科热带树木或灌木的红色木头，尤指云实属巴西木，其木头用于做小提琴弓或一种红色或紫色染料的原料

Castanopsis fissa ; physical properties of wood ; mechanical properties of wood

大叶栎；木材物理性质；木材力学性质

In addition, Wen Guihua for God, Magnolia flower, also known as wood may brush pen flower Wenchang Confucius黄莲favorite wood, and Celosia, Chrysanthemum, etc. on behalf of Deng-Ke gives meaning, so the link with flowers since ancient times "Cyril fame", or official examination and good intentions.

此外，闻规华为上帝，玉兰花，也被称为木料可油画笔花文昌孔子黄莲喜爱的木材，鸡冠花，菊花等代表登科具有意义，所以联系花自古以来&西里尔名人堂&，或正式考试和良好意愿。

Color changes ofpicea sitchensis Carr.wood were little than that of Chamaecyparis Iawsoniana ParI wood.

西特客云杉的变化程度小于美国扁柏的变化。

ChamaecyparisIawsoniana ParI and picea sitchensis Carr.wood treated with BTCA:Values of weigh percentgainreached 9.05% and 8.25%.Values of antiswelling efficiencyreached57.2% and 55.45% respectively.Values of moisture excluding efficiencyreached47.95% and 44.89%.Chamaecyparis Iawsoniana ParI and picea sitchensis Carr.wood treatedwith 1,2,3,4-butanetetracarboxylic acid and glycerin:Values of weigh percent gainreached 13.12% and 12.24%.Values ofantiswelling efficiencyreached 61.11% and63.12% re.Values of moisture excluding efficiencyreached 46.91% and 48.93%.Woodsurface colour of Chamaecyparis Iawsoniana ParI and picea sitchensis Carr.were slightlyvaried from red to yellow and from dismal to bright in crosslinking reaction.

处理后美国扁柏和西特克云杉两种木材，分别达到：WPG9.05％和8.25％；ASE57.2％和55.45％；MEE47.95％和44.89％；酯化剂中加入丙三醇，酯化处理美国扁柏和西特克云杉木材，分别达到：WPG为13.12％和12.24％；ASE为61.11％和63.12％；MEE为46.91％和48.93％；在酯化反应中，美国扁柏木材材色由偏红向偏黄、由稍暗向明亮方向有些变化。

In France there is a romantic little town - Colmar, is based on "wooden" a French town famous, the case is the extraction of natural materials rich "wood" as the creative element, make full use of wood materials, texture and rich modeling to interpret the form of beauty, strengthen the construction of space wind, creating a unique "people-ism" of the perceptual space, with a view to give exposure to people in an emotional exchange in which space and a warm feeling.

在法国有一座浪漫的小镇——科尔玛，是以&木屋&闻名的一个法式小镇，本案就是萃取丰富自然材质的&木&作为创作的元素，充分运用木的材质，肌理和丰富的造型来演绎形式的美感，加强空间的建筑风，营造一个别具一格的&人本主义&的感性空间，以期给予置身其中的人们一个情感交流的空间和一种温馨的感受。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。