查询词典 evolutionary tree

The characteristic parameters of tree belt, such as tree belt width, density, average canopy density, height, and distance from the source to the tree belts were included in the formula.

为了克服林带声衰减量计算过于简化而引起的公路交通噪声预测精度降低的不足，基于植物内部结构及吸声、散射机理的分析，建立了高速公路林带声衰减量计算公式，公式中包含了林带宽度、密度、平均灌幅、高度和林带近路侧距公路中心线距离等特征参数。

The results show that not only the porosity does greatly affect the windbreak, but also the tree distance does. The distance is not beyond 1.3 to avoid air leak. The tree belt with porosity 31% has bigger windbreak range and better characteristics for abating wind erosion. The tight nubby tree belt is advised to restrain the particles adhering on the leaves refloating for large velocity deficit in trees.

结果表明：不仅林冠疏透度对防护林带的遮蔽防风有明显影响，而且树木间的株距对林带整体的遮蔽效果也有比较显著的影响，为避免穿流风对遮蔽效应的影响，林带宽距比不宜超过1.3；疏透度为31%的网状林带的有效防护范围大，防风效果好而且水土保持性强；紧密型块状林带，林后速度衰减幅度大，可抑制附着在叶片上粉尘的再次扬尘。

He was afraid that if he planted the tree near the road,strangers would steal the fruit;if he planted the tree on his farm,his neighbors would come at night and steal some of the apples;if he planted the tree near his house,his children would take the fruit.

他担心，如果他种植的树附近的道路，陌生人将窃取的水果，如果他种植的树木在他的农场，他的邻居会来在夜间偷了一些苹果，如果他种了他家附近的树，他的孩子将采取成果。

Based on Needs analysis and according to the characteristics of the data for rubber tree precise fertilization decision-making, this paper detailed to analysis and design the spatial data and attribute data of rubber tree precise fertilization of state farm, analysised the spatial data and attribute data of rubber tree precise fertilization decision-making and the database structure, then constrcted the corresponding database.

通过需求分析，根据橡胶树精准施肥决策所需数据的特点，对国营农场橡胶树精准施肥空间数据和属性数据进行详细的分析与设计，对橡胶树精准施肥决策需要的空间数据和属性数据进行分析和数据库结构进行设计，并构建了相应数据库。

O it's no family tree, Polly's tree, nor a tree of heaven, though it marry quartz-flake, feather and rose.

啊，这不是家庭树，波莉的树，也不是一棵天堂的树，尽管它和石英片，羽毛和玫瑰结婚。

Stack will be the first to use infix form of the formula into the form of the suffix and then form the basis of the suffix from the beginning of leaf nodes corresponding binary tree structure Finally after by traversal of the tree, and the value of the subtree, that is, for every arrival a node, the value of its sub-tree has been calculated, when the reach the root node, the obtained value is the formula of true value.

首先利用堆栈将中缀形式的公式变为后缀形式；然后根据后缀形式，从叶结点开始构造相应的二叉树；最后按后序遍历该树，求各子树之值，即每到达一个结点，其子树之值已经计算出来，当到达根结点时，求得的值就是公式之真值。

A tree toad loved a she-toad who lived up in a tree. He was a two-toed tree toad but a three-toed toad was she.

一只树蟾蜍爱上另一只住在树上的蟾蜍女郎是一只二趾的蟾蜍，而蟾蜍女郎是三趾的。

This is the white poplar tree, a very common tree in the northwest of China, but it is by no means an ordinary tree.

这就是白杨树，西北极普通的一种树，然而决不是平凡的树！

Tree At My Window Tree at my window, window tree, My sash is lowered when night comes on; But let there never be curtain drawn Between you and me.

树在我的窗前树在我的窗前，窗前的树，当夜幕降临我放下窗扉；但绝没有拉下窗帘在你和我之间。

Arid, broiling environment, let life flinch, but, here still has a kind of arboreous and castiron ground to growing, because live without other tree in desert, these tree often are chopped to fall by native, draw out quiver of empty make it, so they are called quiver tree.

干旱、酷热的环境，让生命望而却步，但是，这里仍有一种树木不屈地生长着，因为沙漠里没有别的树木生存，这些树木就经常被土著人砍下，掏空做成箭袋，所以它们被称为箭袋树。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。