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That enemy units is necessary to complex the structure is relatively divided into two layers, the lower from the field, wells, back, and so shape the composition of the upper hole with Embrasure and hope to observe military and archery use, so there is also a defensive function .
那敌台的构造相对就要复杂一些,分为两层,下层是由田,井,回,等字形组成,上层有垛口和望孔是观察军情和射箭用的,所以这里也具有防御敌人的功能。
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Through the experiments of three kinds of models mentioned above, the structural deformations of "outflow-extension","strike-slip-extension" and "uplifting-extension" are studied and some viewpoints involving that the plastic flow in the lower lithosphere controls the extensional structures are stated as follows:(1) Regional extensional structure does not result from the direct extension along the upper crust, but from the plastic flow in the lower lithosphere and its dragging and stretching the upper crust;(2) Deformation of continental extensional structure resulted from the active uplifting of mantle is conditional that the significant extension occurs only in the models with free- or outflow-boundary condition on both sides, whereas the passive uplining of mantle exists widely, because it is an inevitable consequence of the efiect of thermo-gravity isostasy;(3) Strike-slip shearing in the lower ductile lithosphere, including site-restricted and site-unrestricted shearing, can result in various types of extension structures;(4) The"graben-horst"type extensional structures can be formed in difierent mechanisms, including outnow-extension, shear-extension, uplifting-extension and their synthetical action.
通过上述三种模型的模拟试验,比较系统地研究了"泄流-伸展"、"走滑-伸展"和"上隆-伸展"等构造变形,提出岩石圈下层塑性流动控制了各种伸展构造变形的观点,主要包括以下几方面:(1)区域性伸展构造不是上层直接受到拉伸,主要是下层流动牵引上层伸展;(2)地幔主动上隆引起大陆伸展构造变形是有条件的,需要侧边伸展或不受约束的边界条件,而被动上隆广泛存在于地壳断裂或减薄部位,是热和重力均衡的必然结果;(3)下层塑性流动中的走滑剪切,包括限位剪切或非限位剪切,可以引起不同型式的伸展构造;(4)总结了"堑-垒"型伸展构造的多种成因机制,包括泄流、走滑、上隆及综合作用均可形成"堑-垒"构造,但组合形式不尽相同。
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That is structural highs in overburden of salt are corresponding to the synclines in subsalt layers and anticlinal flanks of overburden are corresponding to anticlinal highs in subsalt layers.
即盐上层构造高点对应盐下层向斜和盐上层背斜翼部对应盐下层背斜高点。
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The change of REE composition between the upper and lower samples from Hongcan well implied the tectonic setting and property of the sediment provenance in Zoige Basin were altered obviously between late-period of Middle Triassic and mid-period or late-period of Late Triassic. This change was probably due to elevation and erosion of the matured continental crust on the east of Zoige Basin, and lots of clastic materials transported into the basin in late-period of Late Triassic.
通过对比杂砂岩稀土元素组成在上层和下层样品之间的变化,若尔盖盆地内中三叠世中期到晚三叠世中期及晚期沉积物源区的构造背景和性质发生了明显的改变,而这一变化很可能是盆地东侧成熟陆壳在晚三叠世后期被抬升和剥蚀,其大量碎屑物质被带到盆地的结果。
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The results of the study indicate:(1) the stress, strain and velocity fields as well as the uplift rates of the model are consistent essentially with those of the prototype in nature;(2) the major driving force for intraplate tectonic deformation in central-eastern Asia results mainly from the compression of the Indian plate;(3) the existence of the RSBs, such as those of Tarim, Alxa, Ordos and Sichuan basin, is one of the basic origins for the development of large-scale compressional basins and the table-like uplift of the Qinghai-Tibet plateau;(4) The netlike plastic-flow in the lower lithosphere is faster than the displacement in the upper layer, controlling the tectonic stress and deformation fields in the upper crust;(5) the weakness layer distributed discontinuously in the middle crust influences the level of difference between the stress directions in the lower lithosphere and those in the seismogenic layer.
研究结果表明:(1)模型中的应力场、应变场、位移速度场和地表隆升速率,与自然条件下的实际状况基本相符;(2)中东亚板内构造变形的驱动力源主要来自印度板块的推挤作用;(3)塔里木、阿拉善、鄂尔多斯、四川盆地等相对稳定块体的存在是促成大型压性盆地形成和青藏高原平台式隆升的基本原因之一;(4)岩石圈下层的网状塑性流动超前于上层,控制上层的构造应力场和变形场;(5)中部地壳的非连续分布软弱层影响上、下层之间应力方向的差异程度。
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Upper Plate rocks consist of a variety of lithologies varying from Paleozoic to Tertiary in age and are locally highly faulted and tectonically juxtaposed.
上层板块岩石由各种不同岩性从古生代到高等教育在年龄和当地高度构造断陷和并列。
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air chamber:室
将成熟的叶状体(配子体)横切,可以看到内部的构造,最上层是表皮,表皮下有一层气室(air chamber),气室的底部有许多不整齐的细胞,排列疏松,细胞内含有许多叶绿体,这是地钱的同化组织.
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closure:闭包
前两年,微软在设计AJAX类库的初期,用了一种被称为"闭包"(closure)的技术来模拟"类". 其大致模型如下:对象可以掩盖原型对象的那些属性和方法,一个构造函数原型对象也可以掩盖上层构造函数原型对象既有的属性和方法.
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Rayleigh wave:雷利波
(2)雷利波 (Rayleigh wave) :质点在平行于震波传播的垂直面上,沿着椭圆形轨迹震动. 如 何谓板块运动? 板块构造学说 (plate tectonics) 主要在说明目前发生在地球上层的构造及解释 地震发生之原因. 地球的最外部为冷而硬的可移动之岩石,