层
- 与 层 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
Meso phanerophytes and micro phanerophytes are main composing plant of arbor synusia in the area.In synusia structure,except for the warm shrubs,frost flora all have arbor synusia,shrub synusia,herbage synusia and lichen synusia.The evergreen broad leaved meso phanerophytessynusia dominates the arbor layer .
在层片结构上,森林植物群落除暖性灌丛外,都具有乔木层层片、灌木层层片、草本层层片和苔藓地被层层片,常绿阔叶中高位芽层片为乔木层主要层片,并多构成群落的建群层片。
-
The geology research of carbonate reservoirs in Ordovician of Tahe oilfield showed that many large dissolved vugs and fractures were developed. The spread of the reservoir take on a very heterogeneous state. And the typical fractured-vuggy reservoirs was formed. According to the combination of the various spaces, the formation was divided into vuggy formation, fractured-vuggy formation and fractured formation. The research showed that development of the vug is relevant to the its position on the structure, the fractures, the water surface and the weathering surface. Multi-phase charge and recharge of the oil in the reservoirs resulted in the complexity of the fluid distribution. So the"Bottle Model"was brought forward to explain the movement of the water-oil contact. The special storage space and the complex fluid distribution lead to the unstability of the production and the complexity of the water cut. In order to explain the characteristic of the fracture-vug unit was brought forward and the basic principle and method of the partition of the fracture-vug unit was formed. The classification and evaluation of the units were performed according the reserve and energy. Based on the research of geology characteristic and the fluid flow in the reservoir the comprehensive numerical simulation plan of the fractured-vuggy reservoirs were established. Through the selection of the simulation unit, fluid flow type and parameter equivalent the triple media reservoir simulation model was established. Considering the practical application the model was resolved by the DKR decomposition conjugate grads method. Based on the fine reservoir description of Dsitrict IV of the Tahe oilfield the various space type were classified and combined together. The geology model of Unit S48 was constructed. Two typical single well model was established according to the geology and the dynamic phenomena. Finally the single well model and the Unit S48 were simulated by the triple media reservoir simulator. Via the local grid refinement and coarsening in the simulation good matchs were gained. Based on the results of the simulation the reserve distribution, percent of reserve produced in various space and the natural energy were analyzed. The fluid was storaged in the fractures and vugs mostly and more than 90% the produced oil came from the systems. The energy belonged to the active one. The results of simulation accorded with the fact and showed the validity and practicability the research and the simulator.
塔河油田奥陶系碳酸盐岩油藏的地质研究表明,其储层中发育着很多大型的溶蚀洞、缝,储层的平面展布呈现出极度的非均质性,形成了典型的缝洞型碳酸盐岩油藏,根据各种孔隙介质在储层中的组合,将储层分为了溶洞型、裂缝-溶洞型和裂缝型三类;研究表明溶洞储层的发育和构造位置、裂缝的发育、潜水面和风化面的位置等因素有关;多期充注的油气成藏模式导致了流体复杂的赋存状态,由此提出了所谓的&瓶子模型&,解释生产过程中油水界面的变化;特殊的储集空间类型和流体分布特征导致油田在开发过程中表现出很大的不确定性和含水变化的复杂性,为了合理的解释油气田开发过程中的动态特征,提出了&缝洞单元&的概念,并制定了&缝洞单元&纵横向划分的基本原则和依据及划分方法,并对&缝洞单元&进行了分类和评价;基于地质特征和流体在其中流动规律的研究,提出了缝洞型碳酸盐岩油藏的数值模拟综合解决方案,通过模拟单元的选择、流动类型和参数的等效,建立了三重介质油藏三维三相数值模拟模型,采用不完全LU分解预处理共轭梯度法进行了求解;在塔河油田4区精细油藏描述的基础上,将各种类型的孔隙空间进行了归类组合,建立了S48单元的地质模型;通过对油井生产动态进行分析研究,建立了两类和油井地质、生产动态相对应的单井模型;最后应用三重介质油藏数值模拟软件对单井模型和S48单元进行了数值模拟,通过局部加密和粗化等技术模拟流体流动规律,取得了很好的拟合效果;结合数值模拟结果,分析了各种介质中的储量分布、储量产出的百分比以及地层的能量,认为塔河油田缝洞型油藏中流体绝大多数储集于缝洞系统之中,所产出流体90%以上也来自于缝洞系统,其底水能量属于较充足的类型;模拟结果和油田实际情况符合较好,说明了地质研究和油藏数值模拟研究的正确性。
-
Type II cells were mainly distributed in layer V of cortex. It appeared that these cells receive the CRF immunostaining fibers terminals afferent from other cells rather than synthesize CRF by themselves. It is probable that type II cells receive afferent fibers from both extracortex and type I cells within layers II -III cortex. Considered that Type I cells morphologically are inhibitory interneuron, we presumed that type I in layer II -III could inhibit activity of type II cells in layer V.
CRF阳性Ⅱ型细胞主要分布在皮层第Ⅴ层,形态学特征显示这类细胞更像是接收来自其它神经元的CRF纤维投射而非自身分泌CRF,证据显示Ⅱ-Ⅲ层CRF神经元纤维可进入第Ⅴ层,考虑到皮层的CRF神经元形态上为抑制性中间神经元,这些结果提示Ⅱ-Ⅲ层CRF神经元能够抑制第Ⅴ层神经元的活动。
-
It indicated that the multiple-layered films were mainly composed by C-F, C=C and Si-O bonging, a little Si-C and Si-F bonding were also existed because of history effect. The bondgap were calculated as 2.7eV. The dielectric constant of the multiple-layered films was close relative to the thickness of the covering layer-SiOx, so the thickness had better be reduce. The bonding configurations of multiple-layered films had no evident changes after 400癈 annealing, the thickness raise very little and the dielectric constant increase 8%. Compared with one-layered a-C:F films prepared in the same conditions, the SiOx/a-C:F/SiOx multiple-layered films had a better thermal stability.
结果表明,多层膜主要由C-F,C=C,Si-O键构成,由于器壁的历史效应,薄膜中还存在少量Si-C和Si-F键;多层膜的光学带隙经计算约为2.7eV;多层膜的介电常数与包层SiO_x厚度有很大关系,应尽可能减小SiO_x厚度;在经历200-400℃的N_2氛围中退火后,多层膜的红外结构没有发生太大的变化:膜厚度稍微增大,介电常数只增加了8%,与同样制备条件下沉积的单层a-C:F薄膜相比具有较好的热稳定性。
-
The synergistic effect of Cu and Mn is listed as follows:(1) On improving the structure of rust layer, addition of Cu and Mn can reduce cracks and pores in rust layer;(2) On altering the composition of rust, it can increase the amount of Fe3O4 and γ-FeOOH, while decrease that of β-FeOOH;(3) On the chemical state of alloying elements and selectivity of rust layer, it mainly convert the anion selectivity to canoed selectivity;(4) On the electrochemical aspect, it can decrease the anode current density and increase the corrosion potential of steel.
Cu、Mn的协同作用主要体现在以下几个方面:在改善锈层结构方面,主要是减少锈层中的裂纹与孔洞,提高锈层与基体的结合强度;在改变锈层组成方面,增加Fe3O4和γ-FeOOH的含量,降低β-FeOOH的含量;在元素化学状态与离子选择性方面,促使锈层由阴离子选择性转变为阳离子选择性,抑制Cl-的渗透;在电化学方面,大幅度降低阳极电流密度,提高钢基体的自腐蚀电位。
-
A Ni-ZrO_2 nano-composite were prepared by electrodeposition.The corrosion resistance of the Ni-ZrO_2 nano-composite electrodeposits in 10%HCl and 10%H_2SO_4 solutions respectively was studied by massloss measurement.SEM was used to observe the morphology of various electrodeposits after corrosion test,and the relevant corrosion mechanism was discussed.
采用电镀工艺制备了纯镍电镀层和Ni-ZrO2纳米复合电镀层,对纯镍电镀层和Ni-ZrO2纳米复合电镀层分别在10%HCl和10%H2SO4溶液中的耐蚀性进行了对比研究,用SEM对各种电镀层腐蚀后的表面形貌进行了观察。
-
At the phonological level, foregrounding is fulfilled through the reoccurrence of the identical sound. Nonce-formations, abbreviations, blends and sense-shift attain lexical foregrounding, and the frequent use of the shorts words and numbers also functions. At the syntactic level, foregrounded features are embodied in the frequent use of active voice and quotations, and also the peculiar use of the tenses. Foregrounding at the semantic level principally turns up in the news headlines. It is the use of metaphor, synecdoche, metonymy and pun that helps to bring the potential of the linguistic elements into full play.
从语相层来看,体育新闻报道通过对标点符号的特殊使用、拼写的变异以及排版方式来实现前景化;从音位层来看,前景化靠对同一音素的复现来实现;从词汇层来看,新词的创造、词汇的缩略、混成及旧词新义等实现了对常规语言的偏离,此外,频繁使用短小词和数字也将报道推向前景;句法层上,体育新闻报道则通过对主动语态、引语等的频繁使用和时态的特殊用法来实现前景化;语义层的前景化主要集中在新闻标题中暗喻、提喻、转喻及双关等的使用。
-
Because of the method of Hamilton semi-analysis solution of the thermo-elastic problem of composite laminates has not any assumptions in the direction of thickness, the continuous conditions of the interlaminated stress and deformation are content. The interlaminated stress and the deformation of the laminates can be obtained through solve the state equations by analysis.
由于复合材料层合板热弹性问题的Hamilton半解析法,在板厚度方向不引入任何假定,保证了层合板层间应力和位移的连续性,通过对状态方程解析求解得到层合板的层间应力和位移。
-
On the other hand, T -type twin and α〓 laths were preferentially formed at these nonequilibrium interfaces. The lath formation process involves complex transformations of the interfacial dislocation core and can be activated preferentially under concentrated stress fields at these interlamellar interfaces.
其二,热形变Ti-45Al-8Nb合金片层结构中,由于偏离严格取向关系的α〓/γ,γ/γ〓片层片层界面上具有较大的应力集中,外应力将优先在这些α〓/γ片层界面上诱导形成T型孪生位错,从而形成横过γ片层的T型孪晶。
-
The only difference was that the total content of Cr in passivated film on electrodeposited zinc alloys was higher.
它们的区别在于:合金镀层钝化膜中总铬量较高,膜层完整、致密,镀层/钝化膜界面存在铁系金属的富集层,这是锌基合金镀层钝化膜具有高耐蚀性的主要原因。
- 推荐网络例句
-
With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.
随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。
-
But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.
不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。
-
Closes the eye, the deep breathing, all no longer are the dreams as if......
关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。