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Willow is an important wide-leaved tree species worldwide.

柳树种类繁多，分布广泛，是重要的阔叶树种，其遗传学研究也较早受到重视。

This research not only provided management technology and method for the mixed uneven-aged stands of coniferous and broad-leaved trees in Changbai mountains, also it have important referring value on the mixed uneven-aged stands management in other area.

本研究不仅为长白山地区云冷杉针阔混交林的经营利用提供了方法技术，而且对其他林区的针阔混交林经营也有着重要的参考价值和借鉴意义。

Based on stands-level forest ecosystem, referring intensive management method of natural mixed uneven-aged stands—control method, the mixed stands of coniferous and broad-leaved trees, in which spruce and fir are dominant species, were studied in this thesis;and explored sustainable management model on forest ecosystem level about economy, ecological environment and society.

本文以林分级别森林生态系统为基础，借鉴了天然异龄林集约经营方法—检查法，对长白山过伐林区以云冷杉为主的针阔混交林的森林可持续经营进行了研究，并从经济、生态环境和社会3个方面探索了森林生态系统尺度上的可持续经营模式。

But behind this great mystery have closed the two-leaved gates of brass, which only the Hand of the Conqueror could burst open.

但是，这个伟大的背后之谜已关闭两个阔叶黄铜大门，只手的征服者可以爆裂开放。

To investigate the spatial-dependence of heterogeneity at multiple scales for a community, we selected a representative plot of 100 m×100 m in the mountainous evergreen and deciduous mixed broad-leaved forest in Sichuan, southwest China (102°50'E, 30°02'N).The location of every tree was mapped by compass, and all-scale analysis of spatial structure of forest community was conducted by the method of PCNM (principal coordinates of neighbor matrices).

为了解植物群落在多尺度下的空间变异规律及其对空间尺度的依赖，以川西南山地阔叶混交林为对象，在有代表性的地段设立100m×100m样地，采用传统的罗盘仪对树体的相对空间位置进行定位，运用主轴邻距法(principal coordinates of neighbor matrices， PCNM)对群落空间结构的多尺度（100m内）特征进行了研究。

Camellia Brown Field which was built in the largest timber Menghai Brown field site forest, tea plantations around the dozens of kilometers, as well as timber-producing forests are broad-leaved forest, which is typical of the ecological tea.

其中布朗山茶场建于勐海最大的用材林场布朗山林场内，茶园周围数十公里均为材林以及阔叶林区，属典型的生态茶园。

The optimal path is very similar to the equation of the three-leaved Rose function .

最优路径的数学模型与三叶 Rose函数相近，建立了此最优解与 Rose函数的关联并对结果进行了讨论。

According to legend, Saint Patrick used the shamrock, a three-leaved plant, to explain the Holy Trinity to the pre-Christian Irish people.

据传说，圣帕特里克使用一种三片叶子的阔叶植物三叶草向前爱尔兰基督教徒来解释三位一体。

The species composition changes following succession rule. The canopies become closer when the pine forest develops to mixed forest and the later develops to broad-leaved forest. Thus more shade-tolerant species invade and some sun-loving(shade-intolerant) species exit.

物种的组成变化符合演替规律，随着针叶林发展成为混交林，混交林发展成为阔叶林，其林冠变得较为密集，因而有更多的耐阴植物侵入，而一些喜光种消失。

A dark, aromatic, small-leaved tobacco of eastern Europe and used in cigarettes.

用于香烟的黑的、芳香的、小叶的、东欧烟草。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"