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The third approach is about the concept of an ITO direct Ohmic contact structure on GaP window layer. The direct Ohmic contact structure is performed by the deposition of an AuBe diffused thin layer and the following activation process on the surface of a Mg-doped GaP window layer. The presence of this thin AuBe diffused layer yields the Be dominant metallic surface layer and significantly reduces the barrier height between the ITO and p-GaP layer. Via the modification of contact structure, not only the brightness was significantly increased but the reliability was comparable to the conventional LED without this structure.
第三个研究为一种具有直接欧姆接触在p型磷化镓窗层与氧化铟锡界面的制程方法,於本研究中并无习知砷化镓欧姆接触层的存在,我们利用金/金铍金属藉由热退火程序,使其金铍原子在磷化镓窗层表面形成具金属特性之薄膜层,降低磷化镓与氧化铟锡接触产生之接面能障;另外,该元件在氧化铟锡直接欧姆接触於磷化镓窗层下,除亮度具明显提升外,在稍大电流(20毫安培)元件可靠度测试下,亦未有明显衰减情形发生。
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At the end of the process a carbon core of the star will be surrounded by a shell where helium is still being fused into carbon, which in turn is surrounded by and envelope where hydrogen is converted into helium.
该过程结束时碳的星核会被一层仍然在进行氦聚变为碳的壳层包围,而在这个氦-碳聚变层的外面还包围着一层由氢-氦聚变层。
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Results showed that the best antibacterial growth on Huaihai West Road was a tree layer of Zelkova schneideriana and Cedrus deodara, a shrub layer of Cercis chinensis and Buxus sinica, and a ground cover of Zephyranthes candida with an antibacterial effect of 51.9%. On Beijing North Road a tree layer of Magnolia grandiflora and a shrub layer of Photinia serrulata revealed an antibacterial effect of 47.1%. Thus, depending on the arrangement, antibacterial effect can improve the urban street-side environment in autumn and winter.
结果表明,秋季10月上旬不同植物群落均具有一定的抑菌作用;淮海西路处理2-5(乔木层为大叶榉树Zelkova schneideriana和雪松Cedrus deodara,灌木层为紫荆Cercis chinensis和黄杨Buxus sinica,地被为葱兰Zenhyranthes candida)和北京北路处理1-4(乔木层为广玉兰Magnolia grandiflora,灌木层为石楠Photinia serrulata)复层配置植物群落的抑菌效果最佳,抑菌率分别达51.93%和47.10%合理的植物群落配置的抑菌效果在秋冬季节对改善街道空气质量具有积极意义。
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Taking the plate tectonics as leading theories, combining outcrop, seismic techniques, drilling and logging datum, inter-verifing manifold researching methods, The paper has amply researched the region. discussed the coupling relation of basin-mountain and the geodynamics system; analyzed geologic tectonic characteristics of the basin; confirmed superposed alteration in Mesozoic of the basin; recompartmentalized tectonic units of the researching region and the basin; studied the tectonic evolution of the basin since Mesozoic; ascertained four large tectonic layers and five tectonic evolution process stages in different ways of formation and tectonic alteration; established different tectonic stages、compages、models and sedimentary filled processes, based on the organic geochemistry and oil-gas geologic characteristics in middle Cenozoic of the basin, the conclusions have been summarized in the paper, such as:The primary source rock in lower Permian and subordinate source rock in upper Triassic are developed in the region with better quality, and secondary hydrocarbon is possible; The bearing system which is comparted by three large tectonic layers and two unconformity surfaces formed in Palaeozoic、upper Palaeozoic to Triassic and Cenozoic developing in the region, compounded with reservoirs of different lithology is developed in the region, while the property of tectonic fracture reservoir is better; Based on the analyzing petroleum accumulation elements and preserving conditions, the deep depressing belt in the north of Luoyang depression、Shiling-Yiyang folded fault belt in Yiyang depression and wide anticline belt in Yichuan depression are advantageous petroliferous region, Zhaizhen anticline in Luoyang depression and Shimen wide anticline on footwall of overthrust in Yichuan depression are optimum tectonic traps.
本文以板块构造理论为指导思想,采用露头区野外地质与盆地地震、钻井、测井资料密切结合,多种测试方法互检的研究方法,探讨了盆山耦合关系及其所控制的地球动力学系统;分析了研究区域和盆地地质结构构造特征,确定了中生代盆地的叠合改造性质,并重新划分区域构造单元和盆地构造单元,深入研究了洛阳—伊川盆地自中生代以来的构造演化;确定了成盆作用和构造改造作用的四大构造层和五期不同方式、方向的构造演化过程;建立了不同构造阶段的构造组合和样式及与构造相关的沉积充填过程;在此基础上通过多种有机地球化学指标,研究盆地中新生代油气地质特征,认为本区发育下二叠统区域主力烃源岩、上三叠统区域非主力烃源岩,两套烃源岩质量均较好,并具备二次生烃条件;认为本区发育古生界、上古生界—三叠系和新生界三大构造层、两个不整合界面分隔、不同岩性储集层叠置组合和构造裂隙型储集层的复式储集体系,其中构造裂隙型储集层储集性能较好;依据油气成藏条件和保存条件分析,认为洛阳凹陷北部深凹带、宜阳凹陷内石陵—宜阳褶断带以及伊川凹陷伊川宽阔背斜带为较有利含油气区,有利的构造圈闭是洛阳凹陷翟镇背斜和伊川凹陷的石门逆冲断层下盘的宽缓背斜
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Want to know, the person's skin can be divided into three-layer of cuticular, dermal, subcutaneous tissue about; All maintaining the limits that tastes generation action is in only cuticular layer, in thin thin divided in the cuticular layer that is less than one centimeter 4, quintuplicate cell, be located in the bottommest for base layer, full vivid cell can grow ceaselessly reach dissension, slowly when upgrade is advanced, the cell can squash gradually, at the same time evaporate, nutrient, until most the corneous layer outside, already was flowing do not have the corneous layer cell of life however.
要知道,人的肌肤约可分成表皮、真皮、皮下组织三层;所有保养品产生作用的范围都仅在表皮层,在薄薄不到一公分的表皮层中分了四、五层的细胞,位于最底部为基底层,布满的活细胞会不断生长及分裂、慢慢往上推进时,细胞会渐渐变扁,同时失去水分、养分,直到最外的角质层,就已是平滑却没有生命的角质层细胞了。
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Based on Three Gorges Project, the following aspects about the three typical embedding manners are studied:(1) The border condition of cyclic symmetry is applied to the finite element models with contact among cushion layer, penstock and concrete. The effects of elastic modulus, thickness and placement extent of cushion layer on the stress of its around concrete are analyzed. It is suggested that the ratio of thickness to elastic modulus can be used as an important parameter in the design of cushion layer.
因此,本文结合三峡工程建设实践,在收集和总结前人经验的基础上,以大型通用有限元分析软件ANSYS为平台,对不同埋设方式的巨型蜗壳结构进行以下几个方面的研究:(1)引入循环对称边界条件,考虑垫层-钢板-混凝土之间的接触摩擦,建立有限元模型;并对垫层敷设范围、垫层厚度和弹性模量等设计关键参数进行了优化,并把"垫层弹性模量与垫层厚度之比"作为参考指标进行设计。
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With the application of concept and method of programme stratigraphy and event stratigraphy,starting with the research for the cycle sediment,where the cyclothem of sequence of the outcropping stratum of mesoproteroxoic and neoproteroxoic era grade may be classificated into four different grade there occur from old to new one in Fangjinshan monutain group,one in Xiajiang group the same as one first stratum,and two in Sinian system involving Ti...
应用层序地层学及事件地层学的概念和方法,从沉积旋回的研究入手,首次在该区出露的中、新元古代地层中划分出 4个不同级别的旋回层,即梵净山群 1个(相当于 1个一级层序)、下江群 1个(相当于 1个一级层序)、震旦系 2个(即铁丝坳组—大塘坡组和南沱组—灯影组,相当于 2个二级层序)。
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High density stacking faults are induced into Al-Co-Ni decagonal quasicrystal by using high temperature deformation. It is found that their fault planes are perpendicular to the ten-fold axis and their displacement vectors R are lying in the fault planes and parallel to a two-fold axis A2D.
通过高温形变的手段在Al-Co-Ni十次准晶中引入了高密度的层错,并发现这些层错的层错面与十次轴垂直,层错的滑移矢量R在层错面内并与二次轴A2D平行。
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Thermal oxidation treatment can increase the surface hardness and elastic modulus significantly and reduce the E /H ratio of the TC4, which indicate the treatment can enhance the wear resistance of TC4 alloy. Long time treatment can increase the thickness of the oxide layer, but the outside layer is apt to desquamate during the scratching. The oxide layer closing to substrate has better bonding properties, but microcrack forms as a result of high stress loading, which lead the layer to flake off completely.
长时间的高温氧化可以增加氧化层的厚度,但在划擦过程中氧化层发生两次脱落,表明氧化层由外表层和次外层组成,外层结合力差,易发生一次脆性剥落,内层与基体的结合强度较高,但在较大载荷作用下会产生微裂纹,导致氧化层的二次剥落。
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Subsequently, the tapetum cell began to disorganize, and it kept the strongest Ca^2+ fluorescence intensity from microspore to pollen maturity until the tapetum was disappeared completely.
在花药壁组织内Ca^2+分布也呈现规律性的变化:造孢组织时期,花药壁组织Ca^2+荧光强度在不同壁层组织中分布均匀;小孢子母细胞时期,药壁中层细胞Ca^2+荧光最强,绒毡层细胞次之;单核小孢子时期,绒毡层细胞呈解体状态,Ca^2+荧光最强,并保持到二核花粉时期直至绒毡层完全消失,但此时花药纤维层发育形成,表现出较强的Ca^2+荧光。
- 推荐网络例句
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I will endeavour to find you some assistance.
我尽力帮你找人帮忙。
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At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.
起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。
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Ah may dee:You are chinese living in a democratic country.
你是居住在民主国家的中国人吧。