A three-wavelength spectrophotometric method is proposed for determination of Condensation-tannis in Betula bark based on the reduction of potassium ferricyanide-ammonium ferric sulphate by Condensation-tannis in the acid medium.
建立了三波长分光光度法测定白桦树皮中缩合鞣质含量的分析方法。
A new method of determining the antioxidant activity of betulin from betula bark is established.
建立了一种测定白桦树皮中白桦脂醇对羟自由基清除率的新方法。
On the birch bark culture of Reindeer Ewenki man;
论驯鹿鄂温克人的桦树皮文化
A simple procedure is described for the simultaneous extraction and determination of betulin and betulinic acid in white birch bark;2.
建立高效液相色谱法测定白桦树皮中白桦酯醇和白桦酯酸含量的方法:2。
I pass my hands lovingly about the smooth skin of a sliver birch, or the rough shaggy bark of a pine.
我爱抚着光滑的白桦树皮或粗糙的松树皮。
Extraction of Betulin from Changbai Mountain Birch Bark, Synthesis of Its Derivatives and Study on Their Bioactivities;
长白山白桦树皮中白桦脂醇的提取、衍生化及生物活性研究
HPLC Determination of Catechin and Betulin in White Birch Bark
高效液相色谱法测定白桦树皮中儿茶素和白桦酯醇的含量
Studies on the Extraction and Separation of the Active Components in the White Birch Bark and the Synthesis of Betulin Derivatives;
白桦树皮中活性成分的提取分离及其衍生物的制取研究
a canoe made with the bark of a birch tree.
有白桦树的树皮制成的小舟。
Don't skin the Bark off a Birch tree
不要把白桦树的树皮剥去。
carbonated drink containing an extract from bark of birch trees.
碳酸饮料，含有白桦树树皮的提取物。
Alaskan birch with white to pale brown bark.
阿拉斯加的一种桦树,白色至浅棕色树皮。
European birch with silvery white peeling bark and markedly drooping branches.
欧洲的一种桦树,有银白色脱落树皮和下垂的枝条。
European birch with dull white to pale brown bark and somewhat drooping hairy branches.
欧洲的一种桦树,树皮白色至浅灰色,枝有柔毛,下垂。
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。
I pass my hands lovingly about the smooth skin of a silver birch, or the rough, shaggy bark of a pine.
我用手喜爱地抚摸过一株白桦那光潮的树皮，或一棵松树的粗糙树皮。
small American birch with peeling white bark often worked into e.g. baskets or toy canoes.
一种美国小桦木,剥落的白色树皮常制作成篮子或玩具舟等工艺品。
The growing birch tree exfoliated excess bark.
这正成长的桦树剥落了过剩的树皮。
The Indians peeled the bark from birch trees to make canoes.
印地安人从桦树剥下树皮做独木舟。
I feel the delicate symmetry of a leaf.I pass my hands lovingly about the smooth skin of a silver birch, or the rough shaggy bark of a pine.
我钟爱地伸手抚摸、感觉出树叶的对称十分精巧，白桦树的肌肤光滑细腻，松树皮粗糙凹凸。
birch of western United States resembling the paper birch but having brownish bark.
美国西部的一种桦树,类似于纸皮桦,但是树皮棕色。
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。