查询词典 birch

The experiment also indicates that the distribution of contents of total phenol was opposite: in white birch, lower parts were higher and in European White Birch, upper parts were higher.

在雪兔选食的过程中，虽然并不回避任何一个种源的桦树幼苗，但它们明显喜食来自中国的白桦，这一结果没有支持过去欧美学者提出的有关理论。

It is shown that it is difficulty to differentiate each vegetation type among sub-tropical evergreen forest, sub-tropical coniferous forest and sub-tropical deciduous forest because of the mixture of their tree spectra. According to the reflection index in the wavelengths of 750 nm to 1 100 nm, the tree species can be divided into 4 groups with descend in reflectivity. Each tree specie can be differentiated from each other according to its slope of the spectrum curve and its reflection index in the wavelengths of 770 nm to 1 010 nm for each forest vegetation type. The unique first order derivative feature can be used to identify litsea, alder, fir, red birch, southwest birch, large schima confertiflora, taiwania flousian and small leaf schima confertiflora.

研究表明：亚热带常绿阔叶林、亚热带针叶林和亚热带落叶阔叶林等植被类型，因其树种间光谱特征混淆严重，而难以彼此区分；根据其反射率在750~1 100 nm范围上的差异，可将其归为4类；就各植被类型而言，其树种间在光谱曲线坡度，以及在770~1 010 nm范围上具有显著差异，可据此将其区分；木姜子、桤木、杉木、红桦、大叶木荷、秃杉和小叶木荷等因具有独特的光谱一阶导数特征，据此可以识别提取。

Birch Reduction, one of the most powerful synthetic methodologies available to organic chemists, provides a bridge between aromatic and aliphatic compounds and makes a huge arsenal of aromatic derivatives readily available for construction of alicyclic molecules, which are possibly converted into various natural products.

Birch还原是联接芳香族和脂肪族化合物的桥梁，它使许多芳香族衍生物成为合成脂肪族化合物，尤其六元脂环天然产物的起始原料，因此Birch还原是有机合成中很有用的方法。

In the 1100 meters - 1500 meters of hillside, apricot, shrubs, birch trees and other lush.

在1100米——1500米的山坡上，山杏、灌丛、白桦等各种林木郁郁葱葱。

This preferred choice of massage therapists throughout the world is formulated with rejuvenating organic Arnica Extract and organic Birch Leaf Extract.

这款广受好评的按摩油，其配方是能使肌肤充满活力的有机山车精华和有机白桦叶精华。

One is the effect of LT crack of wood on wood transverse bending property. Birch, ash tree, walnut are studied, and it appears that under the bending loads the bending strength of the beam with crack will decrease, but not obviously .

第一部分研究了木材LT型裂纹对木材横纹理弯曲性能的影响，在对桦木、水曲柳、核桃楸的研究中，发现含LT型裂纹的横梁在弯曲载荷的作用下，其弯曲性能会有一定程度的下降，但降幅并不明显。

Hebei use of state-owned forest primeval forest, as well as Russia's high-quality Ash tree, birch, poplar, oak for the production of raw materials, with a production history of more than 10 years old timber processing enterprises.

采用鹤北国有林区以及俄罗斯原始林的优质树种水曲柳、桦木、杨木、柞木为生产原料，是一家具有10多年生产历史的老牌木材加工企业。

The drooping branches of the birch-trees swayed in the wind, and dripped bright drops aslant across the road.

乡村道路上总是生长着的卷曲的小草，由于夜雨的湿润看起来更加鲜亮了；低垂的白桦树枝条湿漉漉的，轻风吹过摇摇晃晃，斜斜地撒下晶莹的水珠。

See " From the Aspen and Birch Trees " for more information.

请看"来自白杨和桦树"以的信息。

We produce all the toys are high-quality timber, commonly used include: beech, rubber wood, birch, basswood, pine, MDF, plywood and so on.

我们生产的所有玩具均采用优质木材，常用的包括有：榉木、橡胶木、桦木、椴木、松木、MDF、夹板等。

Warden: That's a beautiful dog, but don't bring her again.

那是条漂亮的狗，但是不要再把她带来了。

You get up in the morning – no hangover!

你第二天早上起来的时候—不会宿醉！