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Asian (47.4%) and temperate genera mainly constituted by North temperate (50%) and E. Asian (50%). So that the geographical elements are discomplex. In the 25 species of arborous layer, 76% is the middle subtropical zonal type, 16% south subtropical zonal type and 8% north subtropical zonal type, of which the first 6 positions of important value index were all middle subtropical zonal type. This showed that the community was subtropical characteristic. There are 59.5% evergreen and 40.5% deblade of 79 known species in which the mid-phaenerophytes is the first position of all, accounting for 27.8%, and the evergreen broad-leaved species constituted the majority of meso-phaenerophytes which accounts for 15.2%.
乔木层多数优势种为稳定型种群,所以乔木层优势区系成分相当稳定,表明该群落为一种顶极群落。59个种子植物属只有10个分布区类型和4个变型,地理成分不复杂,其中热带分布27属占46.6%,温带分布31属占53.4%;热带分布以泛热带和热带亚洲分布为主,分别占52.6%和47.4%,温带分布为北温带和东亚分布各占50%。25个乔木层树种中,中亚热带地理分布类型的占76%,南亚热带地理分布类型的占16%,北亚热带地理分布类型占8%,重要值指数排列前6名的均为中亚热带地理分布类型,所以该群落为亚热带性质。
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The anatomical relationships and the distance within the asterion, the anterior angle of parietomastoid sutures and the adjacent bone structures were studied with dried skulls.
在手术显微镜下观察、测量干性颅骨标本外侧面星点、顶乳突缝前角与周围解剖结构的距离及其位置关系。
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The anatomical relationships of the asterion and the anterior angle of parietomastoid sutures with STP were also studied with injected cadaver specimens.
在头颅湿标本上观察、测量星点、顶乳突缝前角与乙状窦、横窦、岩上窦交界(sigmoid-transverse-superior petrosal,STP)的距离及其位置关系。
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This dissertation was focused on the research about the formation and evolution of NQB from the Late Triassic to the early middle Epoch of Jurassic Period, including integrated analyzing the characteristic of the key stratigraphic surfaces, the time of the key stratigraphy, regional rock straigraphy, biostratigraphy and chronostratigraphy, sedimentary system and depositional facies. On basis of these analysis, a tectonic evolution model have been established for NQB during from the Late Triassic to the early middle Epoch of Jurassic Period.1. After the systematic surface analysis about main stratigraphy units, we found that:(1) the bottom of Xiaochaka formation was comformity with the middle Triassic in the basin, and in the north margin it was deposited and overlapped on the different period stratigraphy before Triassic.(2) The top surface of Xiaochaka formation developed regionally karst and paleo-karst breccia, and was uncomformity with Nadigangri Formation, these things suggest that NQB in Xiaochaka depositing stage was developed from middle Triassic basin, and then an extensive regression occurred, the deposition was over and erosion come into being.(3) The lithologic assemblage, geochemistry, mixed fossils, and stratigraphy overlapping characteristic of Quemocuo Formation in early middle Jurassic indicted that the uncomformity surface was an extension-unconformity.2. Integrated analysis about stratigraphy division and correlation indicted that:(1) the paleontologic assemblage of Xiaochaka formation show its time was Carian -Norian stage of late Triassic. According to it was overlapped by late Triassic Nadigangri Formation, so Xiaochaka formation should be Carian - early Norian stage.(2) the SHRIMP Zircon U-Pb age of Nadigangri formation volcanic rocks wear vary form 216 to 205 Ma, so its time should be Norian, but maybe extended into Rhaetian Stage.(3) The age of its bottom volcanic rocks, the fossil assemblages of its middle and upper members and overlapped by lower Jurassic, indicted the age of Riganpeicuo Formation was Norian - Rhaetian stage. And the same time, the volcanic rocks geochemistry of Nadigangri and Riganpeicuo formation both reflected that they wear formed in rift tectonic settings. The lower lithologic and surface characteristic, fossil assemblages and its upper maybe was conformity with lower Jurassic, all reflected that the age of Tumengela Formation in Tumen area should be Norian - Rhaetian stage.
论文对晚三叠世—中侏罗世早期盆地的形成与演化开展了研究,包括关键地层界面特征分析、关键地层时代归属分析、区域岩石地层、生物地层和年代地层的综合对比分析、区域沉积体系与沉积相分析、岩相古地理分析,最终建立晚三叠世—中侏罗世早期羌塘盆沉积—构造动力演化模式。1、系统的对各地层单元的界面分析发现:(1)肖茶卡组底界在盆地内部与中三叠统整合关系,在盆地北缘为沉积超覆于不同时代的前三叠系之上:(2)肖茶卡组顶界面发育古岩溶角砾岩,与上覆那底岗日组为岩溶不整合接触,说明肖茶卡组沉积时期的羌塘盆地是在早中三叠世的盆地基础发展起来的,后期出现了广泛的海退事件,使盆地结束沉积并遭受风化剥蚀作用;(3)中侏罗统雀莫错组的岩性组合特征、岩石化学特征、古生物化石混积和地层的沉积超覆现象均表现出裂陷环境下形成的伸展不整合面的特征。2、综合地层划分与对比分析认为:(1)肖茶卡组古生物化石组合反映其时代为晚三叠世卡尼期—若利期,根据其上被上三叠统那底岗日组不整合覆盖,将其时代厘定为卡尼期—若利期早期;(2)那底岗日组火山岩SHRIMP锆石U-Pb年龄在216~205 Ma之间,其时代主要为若利期,可能包含有瑞替期:(3)日干配错组底部火山岩的年龄、中上部化石组合及其被下侏罗统整合覆盖,综合反映的时代为晚三叠世若利期—瑞替期,而且那底岗日组火山岩和日干配错组火山岩的地球化学成分分析反映两者均为引张构造背景下的产物;土门地区的土门各拉组的下部岩性及界面特征、化石组合和上部可能被下侏罗统整合覆盖,综合反映其时代为若利期—若利期。
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This product was listed on the end of 2007, incorporates the industry's original Bi-ink double-charged print head technology, two lines of black line up the print head nozzles disnature width to one-inch, print range is from the past two times, the same print area, the sprinkler head General printer requires two round trip, but an C110 to complete.
这款产物2007年不顶上市,拔取了业边步武的独黑墨打印脚Bi-ink技艺,两动白色喷嘴错位摆列,打印脚宽度也扩不小为1英寸,打印边界是畴前的两倍,同样的打印地区,凡是打印机必给喷脚行两个单程,而C110功一次不离可达成。
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As Feathertop walked along one of the quieter streets near the edge of town, he saw a very pretty girl standing in front of a small red brick house. A little boy was standing next to her.
当羽毛顶沿着城边的一条较为安静的街道往前走的时候,他看见在一幢小巧的红砖房子前面,站着一位非常漂亮的女孩子,一个小男孩就站在她旁边。
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The sand dunes analyses data have shown they mainly consist of well sorted, symmetry skewness and find sands, and the kurtosis peak is narrow or very narrow. There are abundant impacts of mechanic process on the surface of quartz grains. The traces of eolian process often superpose on the traces stamped by river and beach processes. The dish--shaped concavities and mechanic pits are the most common surface textures, but the barchan concavities and curved grain edges are indicated the marks by eolian environment. The heavy minerals assemblages of coastal dunes are dominated by relatively high specific gravity which have stable chemical properity suggesting the mordern high dynamic environments of coast area. The depositional structures of coastal dunes are typified by corss--bed sets composed of steep foreset laminates and gentle windward dipping sets. It also contains some shell fragments and strong worn foraminiferal tests that are impossibly found in inland desert. On the other hand, the sandy deposits of the continental shelf of East China Sea are with wide range of grains, and the depositional pattens are quite complicated.
海岸沙丘是晚全新世以来相对稳定的海平面背景下的海岸带风成堆积,其沉积特征是以细沙为主,分选好,搬运方式以跃移占绝对优势,偏度上近对称,峰态窄到很窄;石英颗粒表面机械作用形态丰富,风成作用形态叠加于河流和海滩过程形态之上,碟形坑和撞击麻点是最为常见的表面形态,而新月形坑和曲脊是其指示性的特征标志;沙丘沙重矿物以化学性质稳定、比重较大的种类为主,反映了海岸带目前的高能动力环境;海岸沙丘沙的沉积构造以高角度前积层和低角度顶积层组成的交错层理为典型特征,同时还含有少量内陆沙漠所没有的少量贝壳碎屑和强烈磨损的有孔虫壳体。
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At day 3 to day 10 of reperfusion, PCNA-labeled cells significantly increased in infarct boundary in preoptic area, striatum and deep layer of frontoparietal cortex.
再灌流3~10 d,视前区梗死区周边、纹状体、额顶皮质的增殖性细胞核抗原免疫反应阳性细胞显著增加。
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RESULTS: Contrasts between VGS and fixation on a stationary target identified a network of activation that included the frontal eye fields, supplementary eye fields, prefrontal cortex, intraparietal sulci, and the areas of the visual cortex (MT/V5, V2/V3, and V1) in control subjects and patients.
结果:对VGS和固视于静态目标之间进行对比,结果表明患者和对照者的额叶视区、辅助眼区(、额前皮质、顶内沟以及视皮质某些区域(MT/V5, V2/V3, and V1)的网状系统被激活。
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Results:In comparison with fixation cross, recognition of neutral faces activated the left middle frontal gyrus, the bilateral precentral gyrus, the right amygdala, the left parahippocampal gyrus, the right postcentral gyrus and the left thalamus.
图像数据经SPM2软件处理和统计分析,获得脑区激活图。结果:与识别十字架相比,识别中性表情激活左额中回、双侧中央前回、右侧杏仁核、左顶下小叶、右中央后回以及丘脑等。
- 推荐网络例句
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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.
从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。
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The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.
集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐
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The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.
血精的原因很,以良性病变为主。