查询词典 Yangtze

Based on the measurement of chromophoric dissolvable organic matter in 22 shallow lakes in the middle and lower reaches of Yangtze River, the attenuation of ultraviolet radiation in the lakes in the middle and lower reaches of Yangtze River and corresponding penetrating depth were estimated using empirical models; and checked up utilizing the field measured attenuation of ultraviolet radiation in Lake Donghu Wuhan.

基于对长江中下游22个浅水湖泊有色可溶性有机物吸收的测量，运用经验模式估算了紫外辐射在长江中下游湖泊的衰减及对应的穿透深度，并利用在武汉东湖实测的紫外辐射衰减进行了检验。

Neoproterozoic Baoxing Complex in middle to lower metamorphic grade, located in western margin of Yangtze Craton, consists mainly of metamorphic gabbroic, dioritic gneisses, tonalitic and granodioritic gneisses, and massive monzogranites The studies of petrochemistry and SmNd isotopes of Baoxing Complex reveal that the gabbroic and dioritic magmas came from a congenetic magma derived from the partial melting of spinel lherzolites in depletive mantle, and that the magma was intensively contaminated by crustal materials during its emplacement The tonalitic and granodioritic magma were derived from the partial melting of metamorphic basalts in the lower crust And the monzogranitic magma was formed from partial melting of metagreywacks Integrating the lithological association, their trace elements, SmNd isotopic characteristics and petrogenesis, the Baoxing Complex must likely have been emplaced in an island arc tectonic background at the Neoproterozoic active continental margin of Yangtze Craton

位于扬子克拉通西缘的新元古代宝兴杂岩主要由中低级变质的辉长质片麻岩、闪长质片麻岩、英云闪长质到花岗闪长质片麻岩和块状二长花岗岩组成。岩石地球化学和SmNd同位素特征表明，辉长质片麻岩和闪长质片麻岩为同源岩浆演化序列，原始岩浆起源于亏损地幔尖晶石橄榄岩的部分熔融，在上升和侵位过程中受到了地壳岩石强烈混染。英云闪长质和花岗闪长质岩浆形成于下地壳玄武质岩石部分熔融，而二长花岗质岩浆形成于杂砂岩的部分熔融。综合分析宝兴杂岩的岩石组合、微量元素和同位素特征，该杂岩体最有可能形成于新元古代活动大陆边缘火山弧构造背景，并可能经历了碰撞过程。

According to the physical geography characteristics and spatial distribution,wetland in the Yangtze Basin can be divided into three groups mainly: estuarial and coastal wetland, river-lake wetland in middle and lower reaches of the Yangtze River and Yunnan-Guizhou plateau lakes wetland.

该文根据湿地的自然地理特征及空间分布，将长江流域的湿地大致划分为长江河口地区滨海湿地，长江中下游地区河流、湖泊湿地，长江上游云贵高原湖泊群湿地三种类型。

"The disappearance and extinction of such highly evolved endemic mammals as the white Yangtze River dolphin , the finless porpoise, or the Chinese sturgeon from the Yangtze River can be attributed to a multitude of circumstances, such as the deterioration and loss of their natural habitats, overfishing of the river, the heavy freight ship traffic, and others," Mueller said.

他说，由于受众多因素诸如：白鳍豚自身的退化、它们赖以生存的自然栖息地消失、人类对渔业的过度捕捞、重型货运船舶运输及其它原因的影响，这一有着高度进化历程的无鳍哺乳动物—白鳍豚在长江流域的消失与灭绝。

Relatively, the areaswith lowspecies richness locates in south ofHebei Province,Shandong, Henan and Jiangsu Province, the part of Anhui Province in the north side of Yangtze River and delta ofYangtze River, the areas of Hunan and Hubei along the Yangtze River, as well as the Sichuan basin. All thegeographical units are divided into three groups according to the glires species component by hierarchical clusteranalysis, i.e.

地理单元的物种丰富度分析结果表明，云南西部到四川中部的横断山区、陕西秦岭和甘肃南部山地的啮类动物丰富度较高；河北省东南部、山东、河南、江苏、安徽的长江以北地区及长江三角洲、湖南和湖北的沿江地区以及四川盆地等地物种丰富度较低。

And combined with the transformation of the basin-basin and basin-mountain formed by Caledonian movement, the author thinks that,(1)the Yangtze and Huaxia are still the different plates in Caledonian period, Yangtze plate is subduction plate, Huaxia plate is obduction plate by the activation of PreSinian period tectonic plate joint belt.

首先，虽然有古地磁资料表明两地块从震旦纪到奥陶纪是逐渐靠拢并拼接在一起的，但华南地区至今没有找到证实这次碰撞结合的含有加里东洋壳残片在内的蛇绿岩混杂带，也没有发现与之有关的沟弧盆体系，对此有着不同的解释，这也是研究区多年来一直困扰许多地质学家的原因，也是大家一直争论的热点。

The rocks were probably situated in the followup obduction of split upper crust cover of the Yangtze Plate onto the North China Plate in or after the subduction of the Yangtze Plates continental materials towards the North China Plate,or were placed by southward thrusting when ultrahighpressure metamorphic rocks underpinned.

通过露头的构造地质分析，推断本套地层是在扬子板块陆壳物质向华北板块下深俯冲过程期间或其后扬子板块陆壳上部盖层继续向华北板块仰冲就位的，在超高压变质岩折返时经历了由北向南的逆冲。

Based on the different palaeogeographic location, microbialites in South China can be divided into three districts: the Upper Yangtze platform, the Middle and Lower Yangtze platform and the Nanpanjiang Basin.

根据所处的古地理位置不同，华南微生物岩的分布可分为3个主要地区，即上扬子地区、中下扬子地区及南盘江地区。

The continual expansion of sand dike outside the shore and sandspit of the Yangtze River and Huaihe River, in addition to siltation of the Yangtze River and Huaihe River, caused Sheyang Lake to change gradually from semi-seal to whole-seal.

岸外砂堤，长江、淮河沙嘴的不断发展，以及长江、淮河所携泥沙的沉积作用，使射阳湖逐步由半封闭转向全封闭。

In addition,exotic C4 plant Spartina alterniflora is rapidly invading the salt marshes in the Yangtze River estuary,and displacing the native C3 vascular plants Phragmites australis and Scirpus mariqueter.It is no clear whether the C4 vascular plant invasion has serious impact on food web structure and trophic function of the salt marshes of the Yangtze River estuary.

另外，外来种互花米草正在快速入侵长江口盐沼湿地，这种C_4维管植物入侵将对盐沼湿地食物网及其营养功能会产生什么样的影响也是一个值得探讨的问题。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。