查询词典 tree

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。

Based on the tree martingale decomposition theorem and the con-vergence of locally finite tree martingales,a tree martingale convergence theorem isverified.

再基于树鞅分解定理和局部有限树鞅收敛定理，证明了一个树鞅收敛定理。

Their genealogical tree, that is, a large pine-tree from which they had been cut, was at one time a large, old tree in the wood.

它们的始祖，那就是说一株大枞树，原是树林里一株又大又老的树。

Their genealogical tree, that is, a large pine-tree from which they had been cut, was at one time a large, old tree in the wood.

它们的始祖，那就是说一株大枞树，原是树林里一株又大又老的树。这些柴火每一根就是它身上的一块碎片。

The Bodhi tree at Anuradhapura, Sri Lanka is considered not only as the oldest tree in the world but also as the only tree in the world having an authentic history.

於是这棵被移种在斯里兰卡阿努拉达普拉城的菩提树，就成为了这个世界上最古老的树，同时也是这个世界上唯一具有著真正历史的树。

One popular teen-agers' Halloween trick was to unroll a roll of toilet paper and throw it high into a tree again and again until the tree was all wrapped in the white paper.

一种流行的十几岁的孩子'万圣节诀窍是摊开的卫生纸卷，将其投入高的树上，直到再树又是所有包裹白皮书。

The content of air pollutants in the leaves of planting tree s can reflect degrees of air pollution and ability of absorbability of planting tree s for air pollutants.

研究结果表明：绿化树种对大气污染具有很强的吸滞能力，并依污染气体和树种的不同具有明显差异。

At the same time Agelong Tree has a wide spectrum of features: it automatically builds a family tree for any person, has a mechanism of events allowing the user to make complex biographies, stores texts, photos, sounds and videos, searches, sorts and filters data and shows statistics.

在同一时间， agelong树有一个广泛的特点：它会自动建立一个家庭树，任何人，有一个机制的事件使用户能够作出复杂的传记，商店的文本，照片，声音和视频，搜索，种类和过滤器数据和显示的统计。

The estimate model of the tree's volume is shown by allometry method,the CVD model that transforms tree's volume into biomass reduced and its practical model process is explained.

研究了用相对生长法表示的材积和蓄积模型，导出了单木材积与其生物量的关系模型以及区域蓄积量与生物量的关系模型，即CVD模型，并说明了实际的建模过程。

To improve the precision of tree biomass parameter calculation, this paper explicates the principle, method and process to estimate the parameters of tree biomass by the nonlinear least square according to the formula of allometry method. It gives the formula to calculate the variance and covariance estimated parameters, and reveals the essence of logarithmic linearization regression of power function.

为了提高林木生物量参数的计算精度，根据林木相对生长公式，阐述用非线性最小二乘法求解生物量参数估值的原理、方法和过程；给出计算参数估值之方差与协方差的公式；揭示幂函数对数线性化回归的本质。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切