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The Chinese white poplar veneer and birch veneer were dyed with different color fastening methods following an orthogonal experiment so as to investigate the effects of different dyestuffs,color fastening agents,dosages and add in methods of color fastening agents on the color stability of the dyed veneer.

设计正交试验对大青杨单板和桦木单板进行不同固色工艺的染色处理,考察不同的染料、固色剂、固色剂添加量以及添加方式对染色单板颜色稳定性的影响。

Fourth, Wood: Forest Farm in Inner Mongolia all the year round supply of various types of pine, birch, poplar logs and all kinds of sheet metal.

四、木材:常年供应内蒙林场各类松木、桦木、杨木原木及各类板材。

Produce plywood and concrete forming as poplar,birch,red oak,okume and ay ous.

主要产品有全杨木、桦木、红橡、奥古曼、阿由思等胶合板和建筑模板。

The total content of alkanes and aromatics were up to 60.01% 57.86% for poplar leaves and birch leaves with H/C molar ratio 1.79 and 1.89, O/C molar ratio 0.035 and 0.036, and HHV 45.47 MJ·kg~(-1)and 46.03 MJ·kg~(-1)These data shows that the oil from leaves was very similar to petroleum.

树皮样品所得油中碳氢化合物成分总含量有所降低,油的热值也有所降低,大体在40MJ·kg~(-1)左右,但是在树皮所得油中出现了大量的酚类物质,百分含量在40%左右。

Beavers in the wild usually eat the bark of poplar, willow, birch and maple trees, using the wood for their dams.

它并不把这些当成是食物来源,所以我们就用注射器慢慢喂它吃。

The crack and stress-strain of Chinese White Poplar were studied by the box counting method. The results showed that the cracks were obvious fractal and that the value of dimension D was determined to be between 1.2~1.5 by studying the crack propagation in the two dimensions. By comparing the crack propagation over a period of time, we found that the value of D increased as the crack increased.

运用数盒子法对裂纹发育带在二维平面内的分布进行了分形特征研究,发现木材裂纹具有明显的分形规律,分形维数为1.2~1.5;通过比较不同时间段的裂纹发育情况,发现裂纹的分形维数随着裂纹的扩展呈增加的趋势。

Days when the soil is warm with rain, And through the wood the shy wind steals, Rich with the pine' and the poplar smell, And the joyous earth like: a dancer reels(5)-Through, April days!

在那些日子里,雨水浸润的土地发出暖气,羞怯的风悄悄地穿过树林,满载着松树和白杨的清香,还有欢乐的大地,象舞蹈家一样翩翩起舞-在这整个四月的日子里!

In this paper, the Principle of fractal geometry was applied to describe the fractal properties of poplar wood cell lumen distribution.

应用杨树木材横切面的细胞直径分布描述木材横切面空隙分布的分形特征。

Based on setting up mathematical model of wood fiber cell structure, this paper studied on the variation description method of wood fiber cell structure, at the same time, this item set up the judging rule of the smallest cutting thickness of micrometer wood fiber cell splitting, gaining the high strength MFB of poplar whose modulus reach above 5171MPa.

本文在建立木纤维细胞结构数学模型的基础上,进行了木材纤维细胞结构劈裂描述方法的研究,建立了微米木纤维细胞劈裂的最小切削厚度判定原则,MFB的实验研究获得了弹性模量达到5171MPa以上的高强度试件。

Bring up in town, the boy find it difficult to separate a poplar from a willow.

例句1。那男孩是在城里长大的,所以觉得很难区别杨树和柳树。

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Do you know, i need you to come back

你知道吗,我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。

Chapter Three: Type classification of DE structure in Sino-Tibetan languages.

第三章汉藏语&的&字结构的类型划分。