分布广的

But the phenomenon that crudity cabbage bolting happened frequently because climate was abnormal and cultivating patterns changed.

甘蓝是一种世界性蔬菜，由于其具有适应性广，耐寒性强和一定的耐热性等特点，因此在引入我国后发展很快，分布也很广。

Chapter 1 gives the background,current research process of relatedproblems and summarizes this thesis\'s work.In chapter 2,we study the Brownian motion with holding and jumping on the boundary.We use the resolvent method to obtain the infinitesimal generator because the domain of the infinitesimal generator is essentially the same as the range of the resolvent.Knowledge of this range and of the differential operator determines uniquely the infinitesimal generator.Since the semigroup generated by the DHJ is not strongly continuous,to use the nice property of strongly continuous semigroup in analytic theory,in chapter 3 we show that the dual is strongly continuous and derive ergodicity through spectral radius formulas and finally obtain the ergodic theorem by duality. In chapter 4,we discuss a class of a more general process---one dimensional Feller diffusion proposed by W.Feller in 1954.The Feller diffusion allows the possibility of jumps from boundary to boundary,not only from boundary to the interior.We give the stationary distribution of this process.

具体地，本文的结构如下：第一章给出了问题产生的背景，研究现状及本文的主要工作；第二章研究了在边界上逗留后随机跳的布朗运动，我(来源：3dABC论文网www.abclunwen.com)们用预解算子的方法得到其无穷小生成元，因为无穷小生成元的定义域本质上就是预解算子的值域，知道这个值域和微分算子形式就能唯一地决定无穷小生成元；由于DHJ过程产生的半群不是强连续的，为利用强连续半群的一些漂亮性质，在第三章中我们证明其对偶半群是强连续的，然后由谱半径公式得到遍历性并且最后由对偶得到遍历定理；第四章讨论了Feller在1954年引入的更广的一类过程----一维Feller扩散过程，Feller扩散过程允许有从边界到边界的跳发生，即不仅仅局限于从边界到内部的跳，在这一章中，我们给出了一维Feller扩散过程的平稳分布；在第五章，我们讨论了一些相关的问题，给出了DHJ过程对应的PDE问题及特征值与收敛速度的关系。

Microgastrinae is one of the largest and most important subfamilies in Braconidae.It"s species component is very rich and It"s distribution covers all over the world, all the known species are parasitods of Lepidopteran pests which are the major insect pests in agriculture and forestry. Numerous of them have more value in bio-Logical controll.

小腹茧蜂亚科Microgastrinae是茧蜂科Braconidae内的一个最大和重要的类群，种类多，分布广，已知的寄主全都为鳞翅目害虫，其中有很多的种类有用于农业害虫的生物防治的价值。

At the beginning of the dissertation, the author explained some main concepts and methods, in addition, the major concerns of the social background of Ming and Qing Dynasty and basic spreading characteristics of "Xixiangji". Social pastime and social position of traditional opera turned from vulgar to elegant formed the direct reason of the prosperity of Ming and Qing traditional opera. During the time the general characteristic of the spreading of "Xixiangji"can be concluded as follows: wide-spreading. Chapter Ⅰ, study of the play.

本文的前言部分，除了按照惯例，对课题的提出、研究方法以及一些概念加以说明和论述之外，我们主要针对明清时期的社会背景和《西厢记》传播的基本特点加以探讨和介绍，认为社会的娱乐风气和戏曲文学的社会地位由俗到雅的提升是构成明清戏曲传播繁荣兴盛的直接因素；明清时期《西厢记》传播的总体特征可概括为：受众多、传播时间长、分布广。

Lasius Tetramorium and Achaeta were the dominant groups that accounted for 49.20% of the total individuals. The results suggested that the types of land use affected the species richness and abundance, and human activity has a significant impact on the soil macro-animals community. Agricultural activity reduced soil macro-animal diversity, but did not change their vertical distributions in the soil profile. The results also showed that the differences in the composition of the soil macro-animal community between the middle plain and the west plain in Jilin Province were mainly explained by the dominant group density and rare group numbers in all habitats.

分析结果表明：大型土壤动物类群空间分布的广狭与个体数量的多寡在吉林省中西部平原区呈现出明显的一致性；中部平原区与西部平原区大型土壤动物群落组成存在显著差异；中西部大型土壤动物个体数量差异主要体现在优势类群方面，类群数量差异主要体现在稀有类群方面；土地利用差异明显影响大型土壤动物个体密度和类群数分布，其中农田和居民点园地土壤动物个体密度和类群数明显减少，但对土壤动物的垂直分布没有影响。

The distribution range of Chimonanthus germplasm includes 13 provinces which is wide and continuous, the current distribution center is from the South of Qinling Mountains to the East of Hengduan Mountains.

现知中国蜡梅属植物主要分布于我国的13个省，其水平分布很广，很连续，主要分布于秦岭以南、横断山脉以东的广大地区。

One hundred and fifteen species were identified, among which coastal eurythermic species were predominant, showing obvious characteristics of subtropical population fauna. The results showed that the average abundance of phytoplankton in Shacheng Harbour was 3113.24 ind·L-1. The abundance was higher in the inner bay than that in the outer bay in horizontal distribution. The surface abundance was a little higher, but there was no significant gradient in different water layers in vertical distribution. Shannon-Wiener diversity index, Margalef richness index, Pielou evenness index and Simpson dominance index were 2.390, 2.650, 0.726 and 0.306, respectively.

结果表明，该次调查共出现浮游植物115种，种类以沿岸广温广盐性种为主，并呈现较为明显的亚热带海湾种群区系特征，浮游植物的平均丰度为3 113.24 ind·L-1；水平分布上，呈内湾高于外湾的格局；垂直分布上，表层丰度略高，不同水层的分布梯度不明显；Shannon-Wiener多样性指数、Margalef丰富度指数、Pielou均匀度指数和Simpson优势度指数分别为2.390、2.650、0.726、0.306。

⑴There are NOS/ER positive neurons in the hypothalamic paraventricular nucleus, supraoptic nucleus, periventricular nucleus and lateral hypothalamic area.⑵The double-labeled neurons were mostly distributed in the medial dorsal and lateral dorsal of supraoptic nucleus and in the medial parvicellular, ventral zone. They were extensive slightly,but scattered in lateral hypothalamic area, sporadic in the periventricular nucleus.

1在大鼠下丘脑视上核、室旁核、下丘脑外侧区及室周核均有NOS与ER双染神经元分布。2 NOS与ER双染神经元主要集中分布在视上核的背内侧和背外侧部及室旁核小细胞部腹内侧区，在下丘脑外侧区分布较广但比较分散，室周核呈散在分布。

The major dominant species of predatory enemies were Erigonidium graminicola and Theridion octomaculatum and their individuals were 81.4 percent of the total predatory enemy individuals of the community.1.2 Spatial patterns and their dynamics of major dominant predatory enemies ofarthropod communityThe research results showed that Pieris rapae distributed mainly on heart leaves and back of inner leaves of cabbage plants, Plutella xylostella distributed mainly on the back of cabbage leaves and Lipaphis erysimi distributed widely in cabbage plants. Among the major dominant species of predatory enemies, Sitticus sinensis distributed mainly on the front of leaves of cabbage plants in spring cabbage fields, and Misumenopos tricuspidata and Propylaea japonica distributed widely in cabbage plants.

在捕食性天敌中蜘蛛10种，捕食性昆虫3种，主要优势种为草间小黑蛛、八斑球腹蛛，其数量占捕食性天敌总数量的81.4%。1.2节肢动物群落主要优势种的空间格局及其动态研究结果表明，害虫优势种菜青虫主要分布于甘蓝心叶和甘蓝叶反面，小菜蛾主要集中分布在甘蓝叶的反面，而菜蚜在甘蓝植株内的分布较广；春甘蓝田捕食性天敌优势种中华跃蛛在外层叶正面分布较集中，三突花蛛与瓢虫类在甘蓝植株内的分布较广。

Comparison with grain size measured under proper conditions using traditional methods shows that the lase...

将合适条件下测得的软土粒度分布与传统方法得到的结果进行了对比分析，结果表明，激光粒度仪测量的粒径分布范围较广，采集的数据点比传统方法要密，测量的精度要高于传统方法，因此可以用激光法代替传统方法，以快速准确地测得软土的粒度分布。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。