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A tropical rain forest ; an ever-green forest that exists in tropical regions where precipitation is heavy all the year round ; there are vines , parasitic plants and overgrowth , as well as aerophyte besides those tall trees , bushes and herbaceous plants ; mainly distributed in the Amazon drainage basin in south America , the Congo basin , Malaysia , etc .

名 热带气候终年湿润地区的常绿森林群落。这些雨林区由于常年气候湿润多雨,除高大的乔木、灌木、草本植物外,还有繁茂的藤本植物、寄生植物、附生植物等。主要分布在南美亚马孙河流域、非洲刚果盆地及亚洲的马来群岛等地。例句去热带雨林里探险,必须扎上绑带。

One's pupils or disciples of the wild apple that this system includes Xinjiang, wild apricot, feral cherry, feral Europe plum, the feral fruiter resource such as wild walnut distributings, the data content such as botanical feature and agrobiology feature.

本系统包括新疆的野苹果、野杏、野生樱桃李、野生欧洲李、野核桃等野生果树资源分布、植物学特征和农业生物学特征等数据内容。

No coexisting liquid-and gas-rich fluid inclusions were found during quartz petrogaghy microscope observation, the lack of acid hydrothermal alteration mineral assemblages (e. g., alunite, kaolinite, barite, and anhydrite, etc), the measured bulk gas component data of pyrite-and quartz-bearing fluid inclusions distributed cluster on the volatile-temperature diagram, the similarities of the aqueous geochemical compositions among individual low-salinity fluid inclusion decrepited pits detected by SAM/AES and the sulfur isotope profile of a sirngle pyrite stain smoothly changed implied that the ore-forming fluid phase seperation didn′t, contribute significantly to Duolanashayi gold deposit

石英显微观察未发现有共存的富气相和富液相流体包裹体、金矿床明显缺乏原生酸性蚀变组合(如明矾石、重晶石及硬石膏等)、黄铁矿及石英所含流体包裹体实测结果在气相组成-温度相关图上分布较为集中,黄铁矿所含单个低盐度流体包嘉体液相组成俄歇电子能谱分析结果差别不大以及单颗粒黄铁矿硫同位素离子探针线扫描结果变化不明显等宏观与微观地质特征均说明流体相分离对形成多拉纳萨依金矿床的贡献不大

The linear system optimum control theory distributes one of parameter systembasic topics,in domains and so on aerospace,national defense,finance,communicationhas the widespread application prospect.simultaneously, because the research tech-nique involves to foundation mathematics theories and so on the functional analysis,analysis situs,geometry, algebra.

线性系统的最优控制理论是分布参数系统的基本课题之一,在航空航天、国防、金融、通讯等领域有着广泛的应用前景。同时,由于研究手法涉及到泛函分析、拓扑学、几何学、代数学等基础数学理论。

Under the given condition of acoustic driver, the acoustic field including oscillating pressure, volume flow rate and acoustic impedance in resonator was theoretically reconstructed by using the two-microphone method. The experiment results validate that this method is applicable and accurate for the positions with non pressure antinode and node in resonator. The maximum errors near antinode and node area are up to 12.4%.

在给定双声源条件下,采用双传感器法对该系统谐振管中的声场参数(包括声压、质点速度、当地声阻抗等)分布进行理论声场重构,并通过实验分析,证实了该方法在等径谐振管内非声压腹点和节点处的适用性和准确性,而在声压腹点和节点处的误差最大达到12.4%。

The 29 F globular clusters in the galaxy are selected as samples in my paper (The space distribution and motional orbits of the samples have not been researched in detail before.).According to the basic parameters: azimuth coordinates, distances from the sun, radial velocities and proper motions of sample clusters, the initial positions and velocities of the samples are reduced using the galactic coordinates, and their orbits are integrated by numerical method for three different galactic gravitational potential models.

本文选用银河系中29个累积光谱型为F型的球状星团作为样本(这些样本星团的空间分布和运动特征都没有被详细地讨论过),根据它们的基本资料:方位坐标、日心距、视向速度,绝对自行等参数,归算处理得出了各样本星团的空间分布和运动速度。

Firstly, because the triangle constrained matching propagation begins with the initial corresponding triangulations formed by a few seed points in the stereo pairs, this dissertation studies the affects of different numbers and different distributions of seed points on the image matching results through experimental analysis, and proposes a seed point selection strategy for different image texture conditions, an automatic selection algorithm is also designed that gives good distribution quality for a defined number of seed points.

首先,针对匹配传播过程中的种子点选取问题,通过实验分析研究了不同数量与分布的种子点所构成的初始三角网对匹配结果的影响,进而提出了不同影像条件下的种子点选取策略和一种自动提取一定数量、满足一定分布均匀度的种子点自动选取算法;其次,研究了海量数据情况下同名三角网的快速构建、数据组织存储与局部动态更新的方法;在此基础上,本文提出了随机传播、基于三角形拓扑关系的邻近传播和顾及纹理特征的自适应传播等三种传播策略,分别介绍了其详细的实现算法,并通过实验分析对这几种传播策略进行了比较,实验结果证明自适应传播方法在匹配的可靠性上最优。

The neutron flux distributions are calculated from the 3D diffosion equations of two energy groups and six delayed neutron precursors by separaing the "time" and "space" variables.

堆芯中子通量分布采用分离变量法对两群六缓发中子组三维扩散方程来实时求解,并考虑慢化剂密度、硼浓度、氙和钐中毒、控制棒位置、燃料和慢化剂温度、燃料燃耗等因素对中子通量分布的影响。

In addition to the pons positive neurons were also found in cerebellum, most nucleus of thalamus and hypothalamus, and corpus striatum of chicken.

鸡脑阳性神经元除广泛分布于脑干外,小脑、丘脑的多数核团、下丘脑的背侧核、腹侧核和后核以及大脑纹状体等多数脑区也有一定分布。

Large initial state error and non-Gaussian distribution of state may exist in the deep-space autonomous celestial navigation, so based on the classic six orbit elements, an orbit determination method for deep-space probe is proposed by using starlight angle as measurement information and the unscented particle filter algorithm.

针对深空自主天文导航中可能存在初始状态误差较大、状态分布非高斯分布等问题,基于轨道6根数描述形式,提出了利用星光角距观测信息和UPF算法确定探测器轨道的方法。

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The X-ray diffract was used to analyze the crystal structure of the composite. Results show that after the talc was treated with blend coupling agent, the crystal structure of talc changed, and effect Intercalation phenomenon.

通过X射线衍射分析可知,用混合偶联剂对滑石粉进行预处理后,滑石粉晶体结构发生改变,产生了插层现象,使PP/滑石粉复合材料为纳米复合材料。

An authentic Maui wedding might require the services of a 'kahu', which is a Hawaiian minister.

毛伊可能需要一个真实婚礼服务'kahu',这是夏威夷部长。

Funds involving such cases are limited and there is no huge capital flight.

与此有关的资金数额是相对少数的,并没有引发资本外逃现象。