Discovery of silicified wood in the Middle Jurassic Gyari Formation in the southern Qiangtang depression,Tibet,China,and its significance.;
西藏羌南坳陷中侏罗统夏里组硅化木的发现及意义
Silicified wood,also being called tree fossil or wood fossil,whatever its internal quality is much higher,it still has fossil identity and high quality silicified wood can not be called tree fossil jade.
硅化木,又称树化石、木化石,无论它的内在品质多么优良,依然是"化石"身份,不能把优质硅化木称为"树化玉"。
The silicified wood samples from Burma are studied by using polarized microscope and infrared spectroscope.
硅化木是古代树木经地质作用而形成的木化石,其主要化学成分为SiO2。
Review of Wood liquefaction Research and Its Industrialization potential;
木材液化技术研究现状及产业化发展
At the same time,the theoretic ideas and technical route of wood carbon fibrous materials prepared by using wood-phenol liquefaction product were introduced on the base of wood liquefaction and nano-spinning technique,which will develop a new pathway for the preparation of wood-materials with n.
利用分形理论构建了木材细胞壁中的分形木质纤维,并计算了分形木质纤维S1层和S2层的扭曲分形维数,指出木材中具有纳米尺度的纤维结构;同时,以木材液化和纳米纺丝技术为基础,提出了木材苯酚液化产物制备碳素纤维材料的构思和技术路线,为解决木材纳米、微米材料的制备提出了新思路。
The developing progress on wood liquefaction process in recent years was described in this paper.
本文介绍了木材液化技术制备高分子材料的发展状况,包括液化方法、木材主成分的液化机理以及液化生成物的应用,指出在木材液化反应机理、液化产物的利用和最佳液化工艺的开发等方面尚有待进一步研究,并提出充分利用木材的生物降解性,开发木材液化物与其他材料复合的新型高分子材料具有广泛的前景。
Compared with wood chemical modification,the technological process of thermowood is simple and involves less pollution problems.
炭化木是将天然实木采用160～240℃高温热处理得到的木材,它具有平衡含水率低、不易吸湿、变形和耐腐性优越等特点。
the branch of paleobotany that studies fossil trees.
研究树木化石的学科。
Studies on Chemical Constituents of Canthium Simile Merr. and Canthium Horridum Bl. and Their Antibiotics Activities;
大叶鱼骨木和猪肚木化学成分及药理活性研究
To make woody or woodlike by the deposit of lignin.
使木质化通过木质的沉淀使其木质化或木质一样
On Character and Culture in Mulan Poem;
从《木兰诗》看木兰形象的文化内涵
Part-mechanical paper: Paper containing up to 50% of mechanical pulp with the balance chemical pulp.
部分机械木浆纸:含机械木浆和化学木浆的纸。机械木浆可达百分之五十，余下则为化学木浆。
The wood screen Blocks off the powder room
木隔板把化妆室隔开
Trees help clean the air.
树木有助于净化空气。
To turn into wood or become woody through the formation and deposit of lignin in cell walls.
木质化通过木质素的形成和湿度，从而在细胞壁内形成木质化
Study on Liquefaction of Chinese Fir Wood Meals and Chinese Fir Wood Meals/SiO_2 Hybrid Ceramic Material;
杉木粉液化与杉木粉/SiO_2杂化陶瓷材料的研究
Physiological and Biochemical Mechanism of Biochemical Substance of Schima Superba on Degrading Aluminum Toxicity to Chinese Fir;
木荷生化物质降解杉木铝毒害的生理生化机制
Selective oxidation of betulin for betulinic acid preparation
非金属选择性催化氧化桦木醇制备桦木酸
Study on Liquefaction of Chinese Fir Wood Powder and Resinification of the Liquefied Products
杉木粉液化与液化产物树脂化的研究
A combination of lignin and cellulose that strengthens woody plant cells.
木质纤维素木质纤维素和纤维素的组合物，可强化木质植物的细胞
a bitter compound used as an insecticide and tonic and vermifuge; extracted from the wood an bark of trees of the genera Quassia and Picrasma.
一种味苦的化合物，用作杀虫剂，从苦木属树木木材和树皮中提
Structural Change of Fast-growing Eucalyptus Lignin during KP Pulping and Oxygen Delignification
速生桉木及其KP和氧脱木素浆中木素结构的变化
Woodfree pulp: Pulp which is processed chemically and which contains no mechanical groundwood.
不含磨木浆:用化学方法制造,不含机械磨木的浆。
a plant having hard lignified tissues or woody parts especially stems.
具有硬的木质化组织或茎部是木质部分的植物。
