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transitional zones
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  过渡带
     The Jigongshan Montane Arboretum is located within the Jigongshan Natural Protected Area in Henan Province, established in 1977 with an area of 67hm2 and currently holding 218 taxa of introduced plants and 866 taxa of native plants. It is an institution that focuses on the collection and conservation of plant germplasm of the J igongshan Mountain and other transitional zones and that combines research, public education and tourism.
     鸡公山山地树木园位于河南省鸡公山自然保护区内,建于1977年,面积67hm~2,目前引种栽培植物218种,园内原有866种,是一个以搜集和保存鸡公山及其它过渡带植物种质资源为主,集科研、科普和旅游于一体的科研机构。
     A Dynamic Study of Land Desertification in Desert-Loess Transitional Zones Based on RS and GIS:A Case Study of Yulin Area
     基于RS和GIS的沙漠-黄土过渡带土地沙漠化分布与变化研究——以陕北榆林地区为例
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     The best perforation percentage of the wells which are located in the oil layers with bottom water or in transitional zones is about 30%-40%, but the blocking action of sandwich layers and caliches to bottom water must be fully considered.
     位于底水油层或过渡带区域的油井射开程度30%~40%左右为最好,但要充分考虑到利用夹层、钙质层对底水的阻挡作用;
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     The Xiwang 1-B oilfield is a multi-layer wide transitional zone oilfield which is located in South China Sea waters. The simultaneous exploitation in pure oil areas and transitional zones enhanced the control area of wells and the sweep efficiency of the whole oilfield.
     南海海域希望1-B油田为多层宽过渡带油田,采用纯油区及过渡带同时布井开采,提高了油井控制面积,从而也提高了整个油田的驱油效率。
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     Integrated analysis on seismic data taking account of geologic setting shows that Well Tol should be located in the oil-water's transitional zones.
     综合地震技术和地质条件进一步分析,认为Tol井可能位于油水过渡带
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  过渡地带
     Review on turfgrass variety selection and application in transitional zones of China
     我国过渡地带草坪草种选择及应用进展
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     The Northern Yanshan Mountain, a geographical district on the northern edge of North China, and the northern part of which is adjacent to the grassland, lies in the transitional zones of the Northeast China and the Northern China broad-leaf forests.
     燕山北部山地是东北阔叶林区与华北阔叶林区的过渡地带,北部又与草原区为邻,是华北省最北部边缘地带的一个地理区域。
短句来源
     According to the Chinese bryophytes floristic, it lies in the transitional zones of the flora of Neimenggu-Xinjiang Area, Northeast China and North China.
     按中国苔鲜植物分布区的划分属蒙新区、东北区和华北区过渡地带
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     Both transitional zones between intendal and subtidal zones and transitional zone between reef flat and seaward slope had the most complicated mosaic distribution pattern of species and the highest species diversity.
     期间带与潮下带之间和礁平台与向海斜坡之间的两个过渡地带的生境条件复杂,物种多样性和种类分布的混杂程度都高于其他地段。
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     Hubei Province, situates in transitional zones between South and North China along the middle reach of Yangtze River, has long been enjoying the prestige of "a province with a thousand lakes" and "a land flow with milk and honey" due to rich wetland resources.
     湖北省位于长江中游,地处我国南北过渡地带。 境内河流纵横、湖泊众多,湿地资源丰富,享有“千湖之省”、“鱼米之乡”的美誉。
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  “transitional zones”译为未确定词的双语例句
     Results All C57BL/6 mice inoculated with HP SS1 were positive for HP at 4,8,12 weeks after the last inoculation,the bacteria having a preference for the antrum and transitional zones between the antrum and body,and showed the highest level of colonization,and showed lymphocytes and monocytes infiltration in submucosa of stamoch.
     结果C57BL/6小鼠接种HP SS1后4、8及12周HP感染率均为100%,HP主要定植在胃窦部及胃窦/胃体交界部,黏膜下可见淋巴细胞及单核细胞浸润。
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     The mean positive percentage of bcl 2 in the peripheral zone was (2.70±1.30)% and in the transitional zone (2.40±0.80)%. There were no difference of both the two in the peripheral and the transitional zones ( P > 0.05 ).
     周围区和移行区Bcl 2平均阳性细胞比例分别为 (2 .70± 1.30 ) %和 (2 .40± 0 .80 ) % ,两个区带间差别无显著性意义 (P >0 .0 5 )。
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     Results Data were obtained from 14 prostatic specimens. Four types of AR isoforms were detected with Pl value at 6.5, 6.0, 5.8 and 5.3.There were different expression rates of AR isoforms in prostatic peripheral and transitional zones.
     结果 在 14例AR阳性的正常前列腺组织中 ,发现有 4个AR亚型的表达 ,其等电点 (PI)分别在 6.5、6.0、5 .8和 5 .3。
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     Most earthquakes(M≥6.0)distributed within transitional zones between high and low velocity area or high velocity area in the upper crust,the earthquakes in low velocity were minority.
     M≥6.0地震大多数分布在上地壳高速区与低速区的交接地带或高速区,低速区内的地震活动相对较少;
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     Characteristics and simulation analysis of evapotranspiration of shrub sand dune at the oasis-desert transitional zones
     荒漠—绿洲过渡区灌丛沙包的蒸散特征及模拟
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  transitional zones
Intermingling of central and peripheral nervous tissues in rat dorsolateral vagal rootlet transitional zones
      
The parenchymal glands secrete the seminal fluid and are anatomically arranged into the central, peripheral, and transitional zones.
      
Some spatial variability existed in sediment P flux where P flux was generally greatest at the sites in the riverine and transitional zones.
      
Shrubland formations and associations in mediterranean-desert transitional zones of northwestern Baja California
      
Ecotones are inherent features of landscapes, transitional zones, and play more than one functional role in ecosystem dynamics.
      
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Redox geochemical zoning is of great significance in metallogenetic analysis of uranium deposits. In early 1960's the concept and models of ground water redox geochemical zoning in mineral deposits were suggested. Uranium deposit occuring in interlayered oxidized zone were recognized. To this type belong the roll-type U deposits in sandstone, Colorado Plateau.In China, many epigenetic uranium deposits occur in impermeable rocks. The redox property of rocks is investigated, ΔEh and Fe~(2+), Fe~(3+), C(organic)...

Redox geochemical zoning is of great significance in metallogenetic analysis of uranium deposits. In early 1960's the concept and models of ground water redox geochemical zoning in mineral deposits were suggested. Uranium deposit occuring in interlayered oxidized zone were recognized. To this type belong the roll-type U deposits in sandstone, Colorado Plateau.In China, many epigenetic uranium deposits occur in impermeable rocks. The redox property of rocks is investigated, ΔEh and Fe~(2+), Fe~(3+), C(organic) and S~(2-) concentrations of rock samples from bore holes are determined systematically. According to these indexes, the redox zoning of rocks in mineral deposits is classified. Some deposits occur both in permeable and impermeable rocks. In this case a compound redox zoning model is suggested.Most of uranium ore bodies occur in transitional zones of rock-ground water redox zoning, some are even in reducing zones.

鉴于某些外生铀矿床的矿体产于不透水岩带的特点,笔者从研究矿床整体岩石本身氧化还原性能出发,从钻孔中系统取样测定岩石△Eh值,Fe~(2+),Fe~(3+),C_有和S~(2-)等含量,并根据这些还原性指标,进行矿床岩石氧化还原分(?)。有些铀矿床的矿体既分布于透水岩带,又分布不石透水岩带,提出了铀矿床岩石-地下水氧化还原地球化学综合分带模式。研究结果表明,所有铀矿体均分布于地下水氧化还原过渡带和岩石氧化还原过渡带,或还原岩石带。

The depositional environments of ore-bearing beds and their showing are essential factors which control the strata-bound uranium deposits of carbonate rocks in Guangdong, Guangxi, Hunan, Guizhou provinces and Qinling district. The mineralization is located in the proximity of variation interface where the nature of sediments, the energy of sea, pH and Eh values vary with time. It also occurs spatially at the boundary between uplift and depression. The distribution of mineralized zones are in coincidence with...

The depositional environments of ore-bearing beds and their showing are essential factors which control the strata-bound uranium deposits of carbonate rocks in Guangdong, Guangxi, Hunan, Guizhou provinces and Qinling district. The mineralization is located in the proximity of variation interface where the nature of sediments, the energy of sea, pH and Eh values vary with time. It also occurs spatially at the boundary between uplift and depression. The distribution of mineralized zones are in coincidence with above mentioned variational or transitional zones. It can be suggested that the transitional zones of certain sea basins at paleocontinental margin and continental surface or those among island arc and continental marginal offshore platform are the potential areas for uranium exploration. The wide platforms composed of carbonate rocks of continental surface sea are not favorable for the formation of uranium deposits of this type.

含矿层的沉积环境及其物质表现是我国湘、桂、粤、黔及秦岭地区碳酸盐岩中某些层控铀矿床成矿控制的基本因素。矿化在剖面上处于含矿岩系的沉积环境中沉积物性质、海水能量条件、Eh、pH等因素随时间演化的变异界面附近;矿化在空间上位于含矿岩系的沉积环境中隆起带与洼陷带间的变异部位。矿化带的分布与沉积环境的上述变异带或过渡带一致。因此,这类矿床成矿的远景地区是属于一定地质时代的古陆边缘海盆与陆表海盆的过渡带,或弧间海盆与陆缘和滨外台地的过渡带。广阔的陆表海碳酸盐岩台地不利于这类矿床的形成。我国粤、桂、湘、黔诸省及秦岭地区的碳酸盐岩中均产有层控型铀矿床。过去在研究这些矿床的成矿条件时,常只把地层岩性看作被动的容矿空间或有利于矿液交代作用的场所。近年来,笔者在找矿实践中试用现代沉积和层控矿床理论对某些矿床进行了研究,认为矿床最终成矿虽均与一定的构造-热液作用有关,但矿床的成生分布又严格的受沉积环境的控制。沉积环境及其物质表现是控制成矿的基本因素。本文是阐述这种控制并讨论这种控制机理的一个初步尝试。限于水平,谬误难免,请惠赐教正。

The middle and lower reaches of the Changjiang River is one of the important metallogenic provinces in China. The tectonic unit underwent three different development stages, the geosynclinal, paraplatformal and interplate stages. During the interplate deformation stage, a nearly E-W trending arcuate downwarped zone convex toward the south was formed under the N-S-trending and NW-SE-trending compression. On the basis of the prominent difference between the southern and the northern basements by the end of Proterozoic,...

The middle and lower reaches of the Changjiang River is one of the important metallogenic provinces in China. The tectonic unit underwent three different development stages, the geosynclinal, paraplatformal and interplate stages. During the interplate deformation stage, a nearly E-W trending arcuate downwarped zone convex toward the south was formed under the N-S-trending and NW-SE-trending compression. On the basis of the prominent difference between the southern and the northern basements by the end of Proterozoic, there formed a system of belted network structure with the Yangtze deep fault Zone as its mainstay, whichis of prime importance for controlling the formation and location of igneous rocks and ores. The rocks and the mineral deposits are characterized by their zonal distribution, but aggregation intervals along the various belts into groups at certain.Mesozoic magmatic activity is intense and widespread in the region. The rocks belong to two main magmatic series: the syntectic type and the anatectic type. The former is the most important and subdivisible into the Yangtze style (crust-mantle type) and the Jiangnan style (mantle-crust type). The Yangtze style may be further divided into two evolutionary suites. The fist, which is rich in alkalis and especially potassium is related to the formation of copper ores and the second, which is rich in alkalis and particulary sodium, is related to the formation of iron ores. The geological environments are directly related to ore formation. Copper deposits generally occur in relatively uplifted fold zones and skarn iron deposits occur in uplift-depression transitional zones, whereas sub-volcanic pneumato-hydrothermal iron deposits occur in volcanic depressions. Many deposits are of stratabound nature and occur as "multi-storeyed deposits". The ore-hosted horizons may be divided into four groups. The formation of the Early Carboniferous "Palaeo Tongling-Island" is related closely to the ore formation. The Middle Triassic gypsum (salt)-bearing layers have important influence on the formation of iron and sulphur deposits.It may be concluded that there are three main metallogenic models, viz: "Tongling model", "Daye model" and "Ningwu model", when we consider the respective combined influences of the following ore-controlling factors, i.e. fractures, sequences of magmatic rocks geological environments and specific ore-hosted horizons.

本文论述了我国长江中下游地区的成矿条件和成矿规律。以长江深断裂为主干的带状网络构造系统是成矿带的主导控岩、控岩构造。中生代扬子式同熔型第一成岩序列高钾花岗闪长岩类和第二成岩序列富钠闪长岩类分别与铜矿系列和铁矿系列有成因联系,并分别产于块断褶皱隆起区和断陷火山岩盆地及两者之间的过渡区。容矿层有特定的岩层组合,常含同生沉积矿(胚)层,具一定层控作用。本成矿带的成矿条件和规律可概括为“一断裂,二序列,三环境,四层位”。

 
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