1.
Studies on Population Ecology of Subalpine Birch Forests in the Northeast Border of the Qinghai-Xizang Plateau;
青藏高原东北边缘亚高山桦木林种群生态学研究
2.
Study on Nutrient Use Efficiency in the Mixed Forest with Betula luminifera and Cunninghamia lanceolata
光皮桦杉木混交林养分利用效率研究
3.
Study on the Artificial Neural Network Model of Individual Tree Growth in the Betula platyphlla Plantation
白桦人工林单木生长的人工神经网络模型研究
4.
a genus of trees of the family Betulaceae (such as birches).
桦木科的一个乔木属（例如桦树）。
5.
Toadstools were collected from a range of pure stands of Betula and Pinus both in Britain and the U.S.A.
从英国和美国一系列桦木和松树纯林中收集蕈体。
6.
Serviceability Evaluation of Butula Alnoides and Castanopsis Hystrix Plantation Wood Applied in Furniture and Decorative Utilization;
西南桦、红椎人工林木材应用于家具与装饰材的适应性评价
7.
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
8.
The reality wood flat floor takes wood assortments such as birch, oak wood, elm, color wood as raw material.
实木平板地板以桦木、木、木、木等材种为原材料。
9.
medium-sized birch of eastern North America having white or pale gray bark and valueless wood; occurs often as a second-browth forest tree.
北美东部的一种中等大小的桦树,具有灰色或白色树皮,木材无价值；次生林中常见。
10.
Over the years a ragged secondgrowth of aspen and birch and speckled alder, at the far edge of the baseball diamond, has blotted out that view.
棒球场外围伐过的树林，多年以来又长出了参差不齐的白杨、白桦和满身斑点的桤木，挡住了视野。
11.
any betulaceous tree or shrub of the genus Betula having a thin peeling bark.
桦属的任何一种桦树或灌木,有薄的剥落的树皮。
12.
a smooth leather tanned with willow, birch, or oak, and scented on the flesh side with birch oil.
一种光滑的皮革，经过柳木、桦木、橡木硝制，内壁用桦树油加上香味。
13.
well-seasoned oak, birch, etc
充分风乾可用的栎木、 桦木等.
14.
alder: tree of the birch family,usu growing in marshy places
桤木（桦木科,通常生长于沼泽地带）.
15.
Preliminary Study on Betulinic Acid and Betulin Derivatives' Anti-cancer Acitivity and Mechanism in Inducing Cell Apoptosis
桦木酸及桦木醇衍生物抗癌活性和诱导凋亡机理初步研究
16.
any shrub or tree of the genus Grevillea.
任何属于银桦属的灌木和树。
17.
He used a piece of birch to make a small boat.
他用一块桦木做一只小船。
18.
PHYLOGENY AND PHYTOGEOGRAPHY OF THE BETULACEAE
桦木科植物的系统发育和地理分布