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- Keywords white birch bark;betulin;extraction;recrystallization; 白桦树皮;桦木醇;提取;重结晶;
- We found that birch bark could serve as paper. 我们发现桦树皮可以作纸用。
- European white birch bark 白桦皮
- white birch bark 白桦树皮
- Japanese white birch bark 桦木皮
- The arrow was not painted, as Simon had assumed: rather it was carved from some wood as white as birch bark, and fletched with snow-white feathers. 和Simon之前的推测不民，这支箭并非全无一点装饰：它是用类似白桦树的木质雕刻的，箭羽是雪白的羽毛。
- As we passed along the way, the autumn scenery is the most famous white birch. 在我们经过的一路上，秋天的景物最著名的就是白桦树。
- The birch bark used to be used to write on as paper because the boys then were used to writing on it. 桦树皮过去常常被用来作纸张写字,当时的孩子们已习惯了在桦树皮上写字。
- Study on Management Technology of Secondary Forest of White Birch in Daqingshan Mt. 大青山白桦次生林经营技术研究。
- Average length of fibre is 0.942mm, it excels that of rice straw, david poplar, it is similar to reed, white birch etc. 纤维平均长度为0.;942mm;优于稻草、山杨等;与芦苇、白皮桦等相近。
- The ground of floor can use and other places of wood of northeast china ash, oak, teak, fir, white birch board. 楼层的地面可以采用水曲柳、柞木、柚木、杉木、白桦等地板。
- Higher up were forests of white birches. 再往高处去就是白桦林。
- There are lots kinds of animals and plants here like dragon spruce, Asian white birch, and other rare arbors. 这里的动植物种类繁多，云杉、乌椴、白桦、红松、刺柏等名贵乔木，高大森密，参天蔽日；
- The main species are Shanyang, white birch, juniper, mountain side, such as Parkinson Danmaruru fruit. 经过30多年的封山育林和人工造林，目前森林面积已达22万亩。
- Russian dances: The famous ":Little White Birch" Dance Troupe will travel from Russia to present performances in Beijing. 俄罗斯舞蹈家：著名的"小白桦树"剧团将从俄罗斯旅行到北京演出。
- White birch branches and leaves luxuriants and well-spaced, gainly, especially truncal repair straight, white and refined, very conspicuous. 白桦枝叶扶疏,姿态美丽,尤其是树干修直,雪白雅致,十分引人注目。
- The difference between highest and lowest monthly mean values is about 72% in Broad-leaved Korean Pine forest,73% in Asian white birch forest,26% in David poplar forest,56% in Spruce-fir forest,and 144% in Ermans Birch forest. 不同群落细根现存量月动态变化也有较大差异,月均最高最低相差阔叶红松林约为72%25、白桦林近73%25、山杨林26%25、云冷杉林56%25、岳桦林144%25。
- Major tree species found here include conifers, such as Korean pine, larch and Olga Bay larch, and coniferous-broadleaf trees such as white birch, oak, willow, elm and Northeast China ash. 面积35万多平方公里的东北平原是中国第一大平原，大部分是黑色沃土，盛产小麦、玉米、大豆、高粱、亚麻和甜菜。华北平原大多是褐色土壤，土层深厚，农作物有小麦、玉米、谷子、棉花等。
- Keywords white oil;hydrofining;full scale; 白油;加氢精制;工业规模;
- Discussing the Birch Bark Culture of Northeastern Minority Nationality 论东北地区少数民族的桦树皮文化
