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  edge situation
     The analytic expressions of false alarm probabilities under clutter edge situation are derived. Their performances to counter clutter edge are analysed, and compared with those of the OS(Order Statistics), CA(Cell Averaging), GO(Greatest Of) and SO(Smallest Of) detectors.
     文中推导出了它们在干扰边缘环境中虚警概率的解析表达式,分析了它们抗边缘干扰的性能,并且与OS(Order Statistics)、CA(Cell Averaging)、GO(Greatest Of)和SO(Smallest Of)等检测器进行了比较。
短句来源
     This paper first studies our nation's certain type of Radar's MGO-CFAR detector , mainly analyzing the detector's performance under homogeneous background, multiple targets situation and clutter edge situation.
     本论文首先对我国某型号雷达中的MGO-CFAR检测器进行分析论证,重点分析了MGO-CFAR检测器在均匀背景杂波、多目标环境和杂波边缘环境中的性能。
短句来源
     This Paper studies the Performance of the GOSCA-CFAR  ̄[1,2] under clutter edge situation,We derive the analytic expressions of false alarm probabilities under clutter edge sit-uation,analyse its porformance against clutter edge,and compare it with the OS,CA,GO and SO detectors.
     本文研究GOSCA—CFAR检测器 ̄[1,2]干扰边缘中的性能。 文中推导出了它的干扰边缘环境中虚警概率的解析表达式,分析了它抗边缘干扰的性能,并且与OS、CA、GO和SO等检测器进行了比较。
短句来源
     We derive the analytic expressions of falsed alarm probabilities under clutter edge situation,anlyse its performance against clutter edge,and compare it with the OS,CA,SO and GOSCAdetectors. Results show that the MOSCA preserves the better performance of false alarm control while it possesses the better detection performance in homogeneous background and multiple target situation.
     文中推导出了背景噪声和杂波为高斯分布条件下,它在干扰边缘环境中虚警概率的解析表达式,分析了它抗干扰的性能,并且与OS、CA、SO和GOSCA等检测器进行了比较.结果表明,MOSCA在获得在均匀背景和多目标环境中的良好检测性能的同时也保持了较好的抗边缘干扰性能.
短句来源
     We derive the analytic expressions of false alarm probabilities under clutter edge situation,analyse its performances against clutter edge,and compare it with the GO,OS and CA-CFAR detectors.
     文中推导出了它在干扰边缘环境中虚警概率的解析表达式,分析了它抗边缘干扰的性能,并且与GO、OS和CA-CFAR检测器进行了比较。
短句来源
  margin environment
     In a series of discriminant diagram of cherts, the samples fall into the hydrothermal sedimentation field, showing that they are formed in a continental margin environment. Several ratio values of Fe/Ti,(Fe+Mn)/Ti, Al/(Al+Fe+Mn), MnO/TiO_2 and δ(Ce)also indicate the same characteristics.
     在判别硅质岩的形成与作用的一系列图解上, 样品均落在热水沉积作用和形成于大陆边缘环境的范围内, 这与一些特征值w(Fe) /w(Ti)、w(Fe+Mn) /w(Ti)、w(Al) /w(Al+Fe+Mn)、w(MnO) /w(TiO2 )、δ(Ce)等的分析结果相吻合。
短句来源
  “边缘环境”译为未确定词的双语例句
     Geochemical study shows that this kind of chert is characterized by lower SiO 2 (~80%),higher Al 2 O 3 (~10%)and lower V without significant negative Ce anomaly,which suggests that it formed in a continental-margin environment closely related to terrestrial material.
     地球化学研究发现,该硅质岩具有较低的SiO2(80%左右)和较高的Al2O3(10%左右),微量元素中V的含量也较低,稀土元素中不出现明显的Ce负异常,表明其形成于与陆源物质关系密切的大陆边缘环境
短句来源
     G-layer formed in marginal envionment of lagoon;
     G层铝土矿形成于泻湖边缘环境;
短句来源
     Pyroxene is exclusively augite with high Na_2O, FeO and MnO contents, and plagioclase is low CaO andesine, which share characteristics with their counterparts from gabbros formed in an intra-plate setting and are largely different from those from gabbros associated with island arc or active continental margin.
     岩体主要矿物辉石属普通辉石,Na2O、FeO和MnO较高,长石属中长石,低CaO,这些特征明显区别于岛弧或活动大陆边缘环境中的同类矿物,而与板内伸展环境中形成的辉长岩的矿物特征相似.
短句来源
     The detection ability of the MGO-CFAR detector is only a little bit worse than that of the CA-CFAR detector.
     在杂波边缘环境中控制虚警能力优秀,远好于CA-CFAR检测器。
短句来源
     The REE patterns and characteristics of REE parameters are similar to those of the graywacke deposited at the modern and ancient passive continental margin.
     稀土元素模式及其参数特征相似于现代的和古代的被动大陆边缘环境沉积的杂砂岩。
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  margin environment
Their isotopic composition suggests the existence of a pre-Svecokarelian crust in the district and is consistent with exhalative-sedimentary ore formation in an active continental margin environment.
      
Contribution of nitrate to the uptake of nitrogen by phytoplankton in an ocean margin environment
      


The carbonate debris flow discussed in this paper is distributed primarily in lithologic members Ⅱ, Ⅲ of Luolou Group of the early Triassic system in the south of Guizhou province. Its features are: 1.The carbonate breccias are massive and have clear boundary with a plane or wavy bottom. 2. The composition of the gravels is complex, they may be roughly divided into two types: slope sediments and platform or platform margin sediments. 3. Gravels of various size are mixed, sorting and roundness are poor. 4.The...

The carbonate debris flow discussed in this paper is distributed primarily in lithologic members Ⅱ, Ⅲ of Luolou Group of the early Triassic system in the south of Guizhou province. Its features are: 1.The carbonate breccias are massive and have clear boundary with a plane or wavy bottom. 2. The composition of the gravels is complex, they may be roughly divided into two types: slope sediments and platform or platform margin sediments. 3. Gravels of various size are mixed, sorting and roundness are poor. 4.The gradation of the breccia is poor too. 5. Its lateral distribution is limited, it may stretch into the basin several kilometes, sometimes even more than ten kilometers, having sheet, flute or lens forms, surronuded by the basinal sediments. Therefore, the carbonate debris flow surely exists at the foot of slopes or on basinal margines.

本文论及的碳酸盐岩岩屑流分布于黔南地区下三迭统罗楼群中,主要发育在Ⅱ、Ⅲ岩性段。碳酸盐岩岩屑流具有以下特征:(1)角砾岩为块状,具有清楚的边界。底面平整或波状,下伏层无碎裂现象。(2)砾石成分复杂,大体可分为两类,一类为斜坡沉积经破碎搬运而来;另一类来自台地或台地边缘沉积。(3)大小混杂,分选磨园均差。(4)角砾岩层呈现粗糙的递变。(5)横向分布有限,但可伸入盆地数公里或10余公里,呈席状、沟槽状或透镜状,被盆地相沉积包围,所以,赋存碳酸盐岩岩屑流的地方,是斜坡坡脚或盆地边缘环境

About 100 samples from surface layers of deposits located along the north Coast of Bohai Bay have been qualitatively and quantitatively analyzed,A total of 82 benthonic foraminiferal species belonging to 40 genera has been identified. They are mostly salt-brackish water and shallow water species.According to the distribution of foraminifera two f oraminif eral assemblages can be distinguished. 1) The littoral assemblage living in the enviroments such as the river mouths, coastal plains, beach, lagoon etc. The...

About 100 samples from surface layers of deposits located along the north Coast of Bohai Bay have been qualitatively and quantitatively analyzed,A total of 82 benthonic foraminiferal species belonging to 40 genera has been identified. They are mostly salt-brackish water and shallow water species.According to the distribution of foraminifera two f oraminif eral assemblages can be distinguished. 1) The littoral assemblage living in the enviroments such as the river mouths, coastal plains, beach, lagoon etc. The representative species are Ammonia confertitesta Zheng, Elphidium hughesi foraminosum Cushman, Cribrononion porisuturalis Zheng, Pseudononionella variabilis Zheng, Quinqueloculina seminula var jugosa Cushman, Nonion akitaense Asano etc. They are called the Ammonia confertitesta and Elphidium hughesi foraminosum assemblage east of Nanbao, and the Ammonia Confertitesta and Pseudononionella variabilis assemblage west of Nanbao,2)The near coast shallow sea assemblage, the representative species are Ammonia confertitesta Zheng, Elphidium magellanicum Heron-Allen and Earland, Quinqueloculina akneriana rotunda(GeRke),Cribrononion incertum (Williamson), Elphidium advenum (Cushman), Buccella frigid (Cushman) etc. It is called the Ammonia confertitesta and Elphidium magellanicum assemblage, Difference between the two foraminiferal assemblages clearly shows that the distribution of foraminiferas was associated with water depth, salinity and different types of deposits,A section has been made which is perpendicular to the coastline and passes across Shegang barrier beach. By analysing the relationships between habitats and the amount of foraminiferal shells at each sites along the section, we can judge that the amount of foraminiferal shells is latger in the shoreline of lagoon-swamps, and smaller at barrier beach, even zero on the top of the barriers, but it increases again towords the sea.Those foraminiferal assemblages and their distributions provide an important basis for explaining foraminiferal palaeoecology in this area.

我们对渤海湾北岸177个表层沉积物样品进行了有孔虫分析。经鉴定,未发现浮游有孔虫,底栖有孔虫共计82种,其中包括一新种Jadammina planata He et Li sp.nov.根据不同的环境中沉积物内有孔虫群属种组合不同,大体可归纳为二种组合:一是河口、海滩、泻湖、滨海平原等滨海边缘环境组合,在南堡以东该组合称为厚壁转轮虫——显孔鼓室希望虫组合,南堡以西称为厚壁转轮虫——多变假小九字虫组合,二是分布在水深10米以内的近岸浅海环境组合,称为厚壁转轮虫——缝裂希望虫组合。在不同环境中,有孔虫壳体数量的变化是有规律的,一般在泻湖中有孔虫含量最多,滨岸沙坝处最少,沙坝脊部有时为零,向海方向至近岸浅海共含量又有逐渐增多的趋势。

This paper discussed the tectonic framework, rock and oreforming processes in Motianling and Micangshan-Longmenshan mountains. The following suggestions are reached, 1 . The Qinling Paleotethys Ocean began to spread at Early Changcheng Period and produced the ophiolites and the related ore deposits) 2 . about 1100-1300 Ma. ago, Songpan-Ganzi Oceanic Plate began to collide with Yangzi Continental plate and formed the Hangjiang-Longmenshan glaucophane schistzone; 3 and then the island arc magmatic rock zone, polymetal...

This paper discussed the tectonic framework, rock and oreforming processes in Motianling and Micangshan-Longmenshan mountains. The following suggestions are reached, 1 . The Qinling Paleotethys Ocean began to spread at Early Changcheng Period and produced the ophiolites and the related ore deposits) 2 . about 1100-1300 Ma. ago, Songpan-Ganzi Oceanic Plate began to collide with Yangzi Continental plate and formed the Hangjiang-Longmenshan glaucophane schistzone; 3 and then the island arc magmatic rock zone, polymetal ore deposits and high temperature-low pressure geologic bodies were formed in Micangshan-Longmenshan mountains region) 4 . the conglomerates overlying the Motianling ophiolites might be turbidite sediments of trench but were not morainic debris.

本文论证了长城纪早期秦岭海蛇绿岩、汉江—龙门山古俯冲带与兰片岩带和米仓山—龙门山岛弧岩浆带的存在。对蛇绿岩套中的铬、铁、铜—锌、多金属矿床和岛弧内钙—碱性火山岩有关的斑岩型铜—钼矿、稀有金属矿,提出了板块边缘环境的成矿模式图。

 
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