Transformed plants of white birch were obtained under above conditions and the transformation rate is 2.8 % .

在上述最 适合的转化条件下，农杆菌介导的GUS基因对 白桦 叶 盘的转化获得了抗性再生植株，转化率为2.8%。

This paper studied on the drying properties of white birch before and after urea modification the results showed that modified wood 's drying properties are better than natural such as fast drying speed and high drying quality .

对白 桦 材尿素改性前后的干缩性和干燥特性的研究结果表明，尿素改性材的干燥特性明显好于素材和 水煮改性 材，干燥速度快，干燥质量好。

White birch trees stand tall in Riding Mountain National Park in Manitoba Canada .

在加拿大的曼尼托巴省骑马山自然公园里， 白 桦树长得直入云霄。

White birch ( Betula platyphylla Suk . ) a monoecious species with unisexual flowers . It has certain value on landscaping building materials catering industry and pharmaceutical industry .

白桦（BetulaplatyphyllaSuk.），是雌雄同株的单性花树种，在园林绿化，建筑材料，餐饮业及医药业等方面具有一定的应用价值。

Influence of Temperature Programmed Rate on Pyrolysis Rate of the Stalk of Soybeans and White Birch

升温速率对大豆秸、 白桦热解速率的影响

The effect of white birch on the Russians and its culture is discussed in the essay .

历史地透视 白 桦树这种 普通 的 植物对俄罗斯人的生活所产生的影响十分必要。

At the sight of this white birch grove I know we are nearing Wolong Lake .

看到这 片 白桦林，咱们就离卧龙湾不远了。

' water heartwood ' of white birch in the north-east China

东北 白桦的‘水心材’

0.2 g / ml of larch leaf aqueous extracts had significant inhibition on radicle growth of white birch but other concentrations of larch bark and leaf aqueous extracts and leaf volatiles had little inhibition effects on seed germination of white birch ;

0.2g／ml的兴安落叶松树叶水浸液对 白桦种子胚根生长有显著抑制作用，而其余浓度的树叶水浸液和兴安落叶松树皮水浸液及树叶挥发物对白桦种子萌发的抑制作用均不显著；

Yes I do . It 's Gordon Lawson at No.986 White Birch Street .

是的，我有。是高顿·劳森，地址是 白 桦树街986号。

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 .

本文研究中还发现， 桦树 幼苗的总酚含量在 白桦和欧洲 白桦中有不同的分布， 白桦 枝条的下部总酚含量较高，而欧洲白桦的枝条上半部总酚含量较高。

Comparison of the Decaying Ability to White Birch Wood among Four Wood Rot Fungi

4种木材腐朽菌对 白桦木材降解能力的比较

In order to meet the need of forestry production the molecular breeding and construction of genetics and mapping were the most fundamental work on white birch .

为了满足林业生产对 白桦的需要，应用分子育种技术对 白桦进行遗传改良，构建遗传图谱是一项最基础工作。

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

The significant edge effect was found in Korean pine white birch black birch and aspen stands .

边缘效应表现显著的 树种有红松、 白桦、山杨和黑桦。

Artificial regeneration techniques for Korean Pine under white birch forest

白桦林下红松人工更新技术的研究

The result of the test shows that the survival percent of the second generation planting forest separately is 94.9 % White Birch 90.6 % Manchurian Ash 95.6 % Dragon Spruce 92.8 % Larch average survival percent is 93.5 % ;

试验结果表明：二代人工林当年成活率分别是， 白桦94.9%、水曲柳90.6%、云杉95.6%、落叶松92.8%，平均成活率达到93.5%；

Relationship between Total Phenol in White Birch Wood and Wood Rot Fungi

白桦木材中总酚含量与抗木材腐朽菌的关系

The periods of half decomposition and the time of ninety-five percent decomposition of the dead leaves of this three kinds as follow . Northeast China Ash 0.4 ~ 1.7 years White Birch 0.9-3.9 years Mongolian Oak 1.9 ~ 8.2 years .

3种枯叶的半分解期及分解95%所需时间分别为：水曲柳0.4年与1.7年， 白桦0.9年与3.9年，蒙古栎为1.9年与8.2年。

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。

Additionally the refined yield of White Birch wood vinegar ( 92.2 % ) was relatively high .

桦木醋液精制得率（92.2%）相对较高；

The Isolation and Regulation about Contaminate Microbials in Natural Asian White birch Juice

天然 白 桦树液中污染微生物的分离与控制

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。

However only 0.2 g / ml of white birch leaf aqueous extracts had inhibition on radicel growth ( p < 0.05 ) and that germination percentage and index of larch seeds were inhibited significantly by 0.1 g / ml of white birch leaf extracts ( p < 0.05 );

0.2g／ml的 白桦树叶水浸液仅显著抑制了胚根的生长，而0.1g／ml的水浸液则显著抑制了兴安落叶松种子发芽率和发芽指数（p＜0.05）；

Han Jia This is the first time I have ever seen such a dense white birch forest .

韩佳，这么茂密的 白桦林我还真是头一次看到。

The pyrolysis behaviour of the stalk of soybeans and white birch is determined by thermogravimetry ( TG ) and derivative thermogravimetry ( DTG ) . The influence of the temperature programmed rate on the rate of biomass pyrolysis was studied .

采用热重法（TG）和微商热重法（DTG）测定大豆秸和 白桦热解行为，研究升温速率对热解速率的影响。

At its factory in Burnham Maine hardwoods ( primarily white birch purchased from managed forests in the state ) are stripped of their bark and cut into boards for drying .

在其位于缅因州伯纳姆（Burnham）的工厂中，硬木（主要为购自该州可持续管理森林的 白桦 木）被剥除树皮，然后切割成木板等待干燥。

Negotiation on Diplomatic Normalization of Japan & Soviet Union and Struggle of Political Parties in Japan ; HPLC Determination of Catechin and Betulin in White Birch Bark

日苏邦交正常化谈判与日本国内党派斗争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

Based on the means of extracting DNA from herbage and RNA from microorganism three new methods of extracting RNA from white birch stamen tissues are posed in this assay .

笔者在以往草本植物DNA和微生物RNA提取方法基础上，提出了提取 白桦雄花芽组织RNA的3种方法。

A study on the drying properties of white birch before and after urea modification

白桦 材尿素改性前后干燥特性的研究