查询词典 ordeal bark

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。

To harmful microflora white part of birch bark is obliged precisely to betulin.

稳定有害菌群白桦树皮部分恰恰有义务为桦木醇。

The microwave-assisted extraction of betulin from Betula platyphylla Suk. bark was optimized using uniform design.

利用均匀设计法优化了微波辅助提取白桦树皮中桦木醇的工艺。

MATERIAL AND METHODS: Betulin was isolated from dry powder of the bark of silver birch by using ethanol circumfluence, decompress concentration and methanol-chloroform recrystallization.

材料与方法：取一定量的白桦树皮干粉，通过乙醇回流，减压浓缩和甲醇-氯仿重结晶等步骤获得白桦酯醇纯品。

The results showed a betulin yield of 25.43%, a purity of 59.19% was achieved from 1g powder of B. platyphylla bark under the extraction temperature of 72℃, microwave power 67W, and extraction time 100s.

试验结果表明，1g白桦树皮粉末，在提取温度72℃、微波功率67W，提取时间100s的条件下，微波辅助提取的桦木醇收率达到25.43%，纯度达到59.19%。

BACKGROUND ＆ AIM: Betulin is an important triterpene. We investigated the antitumor activity of betulin, extracted from the bark of silver birch.

背景与目的：白桦酯醇是一种重要的三萜类生物活性分子，本文从白桦树皮中提取获得白桦酯醇纯品，然后研究该生物活性分子抑制食管癌细胞的活性。

And a birch bark compound, betulinic acid, is being tested as a treatment for melanoma and other serious diseases.

一、桦树皮大院桦木酸，正测试作为治疗黑素瘤和其他严重疾病。

A thick trunked tree of the bombax family, native to African: fiber from its bark is used for making rope, paper, etc., and the gourdlike fruit has an edible pulp.

由于植物学知识少得可怜，读过Webster的释义，疑惑比解惑更多，就花了点儿时间，用Google爬了一些资料来研究，获得一些初步结果。

Small slow-growing pine of western United States similar to the bristlecone pine; chocolate brown bark in plates and short needles in bunches of 5; crown conic but becoming rough and twisted; oldest plant in the world growing to 5000 years in cold semi-desert mountain tops.

美西部小型松树，类似狐尾松，生长缓慢；巧克力色鳞状树皮，五针一束短叶；圆锥树冠但坚硬和扭曲；五千年前已存在于半沙漠的山顶地区。

The chemical compositions ,fiber morphology and physical pulping characteristics of Broussonetia papyrifera bark produced in dry-hot valley of the Jinshajiang River were analyzed.

对金沙江干热河谷区构树韧皮纤维的化学组成、纤维形态和成浆物理性能进行了分析，结果表明：构树韧皮的木素含量低，纤维素含量较高，达43。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。