层的
- 与 层的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The improved e-N method can also yield results well agree with those obtained by DNS.4 The transition prediction for boundary layers on cones with different key parameters such as angle of attack, cone half angle and the Mach number of the coming flow, have been made, to show the reliability of the modified e-N method.5 For the calculation of base flow, boundary layer equations can be used in the case of small angle of attack.
但是它要依赖于对初始扰动的正确预估,这显然又取决于更多飞行数据的积累和分析。e-N方法的转捩预测结果与直接数值模拟得到的结果也吻合较好。4通过对不同来流攻角、不同半锥角和不同马赫数的三维圆锥边界层的转捩位置进行预测,证实了改进的e-N方法对于三维边界层转捩预测是可靠的。5对于基本流的计算,边界层方程可以用于小攻角的情况,其计算量远远小于直接数值模拟,但背风面的剖面不可靠。
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The main theorem of this paper is to, firstly, on the grounds of experience preliminarily estimate the parameter of the pavement nonlinear model, simulate the process with computer procedure, and check the result with the data collected in sit, then set the aim function and the superiority back-calculation method, if the function is not satisfied, it is to the method adjust the parameter and make the model impend the actuality, If the function is satisfied, it is to end the process, and record the stress, deformation, displacement and the parameter as the actual condition.
本文分析的主要原理:首先根据经验,初估路面结构层应力应变非线性参数,利用计算机程序模拟承载板试验测回弹弯沉的过程,通过现场实测的弯沉数据来检核该模拟过程的真实性,设定目标函数,选定适当的优化反算方法,当目标函数不满足时,即利用该优化反算方法调整本构模型参数,使得模型能够逐步向真实解逼近,当目标函数得到满足时,则认为此时反算得到的路面结构层的应力、应变、位移场为真实的应力、应变、位移场,所推算得到的非线性应力应变模型为真实的路面结构层应力应变模型。
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Since there\'s inlayer heterogeneity in layered sandstone reservoirs and remaining oil potentials are mainly in thin or poor layers, which are mostly in delta front facies growth, this paper studies physical characteristics parameters interpretation methods for delta front deposit reservoirs to deepen the acknowledge to the depositional modes and features for further implementing the develop adjustment potentials and optimizing the potential tapping adjustment patterns. This practice has an important guiding sense to enhance the ultimate production recovery for mature oilfields.
我国大多数主力油田都属于陆相河流—三角洲沉积储层,如大庆的喇嘛甸、萨尔图和杏树岗等油田,这些油田基本上均已进入高含水后期开采阶段,尤其是以河流相发育为主的主力油层综合含水已达到90%以上,由于多油层砂岩油田存在层间的非均质性,油田的剩余油潜力主要集中在以三角洲前缘相发育为主的薄、差油层中,因此研究三角洲前缘相沉积储层的物性参数解释方法,深化其沉积模式及沉积特征的认识,进而落实油田开发调整潜力,优化调整挖潜方式,对提高老油田最终采收率具有重要的指导意义。
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The research results show that stiffness ratio of superstructure and ratio of damping and stiffness in isolated story have great influence on local deformation of structure. It can reduce the local deformation and increase entirety of structure effectively through rational laying rubber bearing and adjusting distribution of stiffness and damping in isolated story. The specific conclusion of the paper is that local deformation of isolated structure becomes minimality when translational stiffness ratio of superstructure is consistent with stiffness ratio of isolated story; and it also can reduce local deformation of minor structure by reducing damping ratio of isolated story properly.
本文研究表明,上部结构的刚度比及隔震层的刚度和阻尼比对结构的局部变形有着很大影响,通过橡胶垫的合理布置,调整隔震层的刚度和阻尼分布,能有效的减小结构的局部变形,提高结构的整体性,从而使隔震效果得以确保;本文的具体结论是,当上部结构的侧移刚度比与隔震垫刚度比一致或相近时,隔震结构的局部变形最小;适当减小子结构的隔震层阻尼比可减小该子结构的局部变形。
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Disclosed is a leaky-wave dual polarized slot type antenna, including: first and second feeding circuit sections comprised of N-first strip lines and N-second strip lines with a loop every first period along the X-axis on the first dielectric layer and a second period along the Y-axis, in which the N-first strip lines and the N-second strip lines are parallel to each other being alternate, and each length of Ls1 and Ls2 for the first period satisfies the equation of , first and second multi-channel dividers formed at once and the other sides of the first dielectric layer, to connect the N-first strip lines and the N-second strip lines parallel with each other; and first and second central ports formed in the opposite direction of the cavity, each of the feeding circuit sections being connected to the first and second multi-channel dividers; and first and second slot sections being formed by patterning the second shielding layer, in which M-first and M-second slots are arrayed along the direction of the X-axis and each of the first and second slots forms N-row first and N-row second slot arrays, respectively, which cross the first and second strip lines for each, the first slot and the second slot being orthogonal to each other.
公开了一种漏泄波双偏振槽型天线,包括:第一和第二馈电回路部分,其具有沿着X轴在第一介电层每第一周期以及沿着Y轴的第二周期形成具有环路的N第一带状线和N第二带状线,其中N第一带状线和N第二带状线彼此平行并交替,并且对第一周期的各Ls1和Ls2的长度满足等式,第一和第二多通道分配器寻形成在第一介电层的一侧和另外一侧上,以连接彼此平行的N第一带状线和N第二带状线;以及形成在腔的相对方向中的第一和第二中心端口,每个馈电回路部分连接到第一和第二多通道分配器;以及第一和第二槽部分,所述第一和第二槽部分通过对第二屏蔽层形成模式而形成,其中M第一和M第二槽沿着X轴的方向安置,各第一和第二槽分别形成N行第一和N行第二槽阵列,其对每个横过第一和第二带状线,第一槽和第二槽彼此正交。
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The results show that a MgSnO3·H2O conversion film is formed by treatment in the stannate solution at 90℃, and the immersion test and potentiodynamic polarization show that the corrosion resistance of the AZ91D alloy is improved to some extent.
结果表明:锡酸盐转化处理后合金表面形成了以MgSnO3·H2O为主要成分的转化膜,可对合金起到一定的防护作用;转化膜由细小的球形颗粒密积而成,颗粒之间存在间隙,它可以为化学镀镍的前处理过程提供良好的吸附条件;转化膜上的化学镀镍层组织致密、无缺陷, MgSnO3·H2O转化膜在镀镍层与基体之间起到过渡作用,镀层的磷含量达到9%,与基体结合良好;在3.5% NaCl (pH=7)溶液中的动电位极化测试表明,镀镍以后的合金在阳极极化过程中发生了明显的钝化,耐腐蚀性能进一步提高,对基体起到了较好的防护作用。
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The paper through the mechanism which produces to the asphalt road surface water harm carries on the induction to summarize, as well as the different type bituminous mixture water stability has carried on a series of contrasts experiment to several kind of different aggregates and the asphalt adherency, has analyzed the aggregate and the asphalt adherency and the bituminous mixture water stability; Meanwhile moves the water action mechanism take the pavement structure in as the key point, in the basis room experiments to the design half rigid base bituminous mixture test sample carries on washes out the experiment, the observation test sample and washes out when the number of times increase along with the time variation the basic unit wash load situation, has analyzed the water to the bituminous pavement various structures level damage rule; To immerses under the condition using the ANASYS finite element software the bituminous pavement structure level the stress to carry on the analysis computation, and analyzed the bituminous pavement according to the computed result to produce the unboiled water harm the rule, further to understand the structure level produced the unboiled water harm the rule.
本论文通过对沥青路面水损害产生的机理进行归纳总结,对几种不同集料和沥青的粘附性以及采用不同抗剥落措施的沥青混合料的水稳性进行了一系列对比试验,分析了集料与沥青的粘附性及沥青混合料的水稳定性,并对水稳性试验进行了评价;同时以路面结构中的动水作用机理为重点,依据室内试验对设计的半刚性基层沥青混合料组合试件进行冲刷试验,观察试件随时间变化和冲刷次数增加时基层的冲刷量情况,分析了水对沥青路面结构层的损坏规律;利用ANSYS有限元软件对浸水前后沥青路面层底应力进行分析计算,并根据计算结果分析了沥青路面产生水损害的规律,进一步了解结构层产生水损害的规律。
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When the gas flux is constant, the ratio of reduced resistance is improved with the increase of the water stream velocity. However, the relationship between the gas flux and the ratio of reduced resistance is more complex. When the water stream velocity is constant, if the gas flux is small in contrast, the effectiveness of reduced resistance is not obvious. But when the gas flux increased, the jetted gas will form """"archform"""" which will augment the shape resistance. In this condition, resistance could not be reduced and could even be increased, if the gas flux continues to be increased. So that there needs setting a baffle called step, which introduces the jetted gas into the turbulence boundary layer. In this case, the shape resistance may be fairly great. Besides, the waterline of model has also some effect on the ratio of reduced resistance, which acts on the size of wave. If waterline is deep, the wave could not affect the deployment of microbubble layer, so there is almost no effect on ratio of reduced resistance. However, the wave would affect distributing of microbubble layer under the model so that the gas could leak out from the two sides of model and directly affect the ratio of reduce resistance if the waterline is very small. Whether installing the dashplate or not has also the great influence on the effectiveness the ratio of reduced resistance. From the results of experiment, conclusion is that adding dashplate will greatly improve the effectiveness of reduced resistance.
当喷气量一定时,水流速度增大,减阻率提高;喷气量与减阻率之间的关系比较复杂,速度一定时,如果喷气量较小,减阻效果就比较差,但当喷气量增大的话,喷射出的气体就会形成一个&拱度&,增加了船模的形状阻力,在这种情况下最好采取断阶喷气,把气体引入到湍流边界层中,在这种情况下,船模的形状阻力比较大;船模的吃水对减阻率也有一定的影响,主要表现在波浪大小上,如果吃水较深,波浪影响不到微气泡层的分布,对减阻率不会造成太大影响,如果吃水较浅,波浪就会影响到微气泡层在船模底部的覆盖情况,可能会有部分微气泡从船模两侧泄漏,这样就直接影响到了减阻效果;是否安装压浪板,对减阻率也有较大的影响,从试验结果可以看出,在船模尾部加设了压浪板时,减阻效果明显得到改善。
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After selective extraction, the cyst wall of two kind of resting cysts displayed a filament network. In the resting cysts of Tachysoma pellionella and Euplotes encysticus, the filament was located in mesocyst and endocyst respectively. On the other hand, a special filament scaffold region was observed below the cyst wall in two kind of cysts. Compared with the true IF which was located in central part of cyst, the filament of this region was net as well as uniform, and no any cytoplasm residue can be seen in this region. In the resting cyst of Euplotes encysticus, a filamental boundry which partitioned the special filament scaffold region and the true IF region was observed.
两类休眠包囊的包囊壁经生化分级抽提后均显示纤维结构,急纤虫休眠包囊中纤维定位于中间层,包囊游仆虫休眠包囊中纤维定位于内层壁;其次,在两类休眠包囊的包囊壁下,相当于细胞质表质层的位置,均有一个特殊的纤维网络区,与细胞质深层的网络区相比,此部分的纤维纯净、均匀,未见附着细胞器及细胞质残留物,在包囊游仆虫休眠包囊中此纤维网络区与真正的细胞质纤维网络之间由纤维构成的界膜隔开。
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Many structural deficiencies and mistakes were highlighted, which including excessive horizontal displacement in the ground, more severe damaged transition layer (the first masonry structure layer), ground with farraginous structure, and poor construction quality. Finally, lateral stiffness ratio of the second to ground story in masonry buildings with RC frame structure at the bottom will be optimized following difference of materials between the ground floor and the upper floors. The strength and the ductility of transition layer, as well as shear walls in the ground floor, are crucial to keep the building standing during large earthquake.
在介绍和总结了汶川地震中底框砖房的表现―底层过大的水平侧移、过渡层严重破坏或完全坍塌、底层严重破坏或房屋完全倒塌、上部砌体整体发生侧移、以及设计一和施工质量良好的底层抗震墙砖房&大震不倒&的基础上,得出以下结论和建议:在抗震设防地区应禁止使用部分底框砖房,地震中过渡层的实际受力情况与设计所采用的受力状态有明显的区别,规范应考虑砌体和钢筋混凝土材料的不同力学性质来制定上下层刚度比要求,明确对过渡层的延性和强度要求,明确该类结构抗震概念设计的具体措施。
- 推荐网络例句
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I didn't watch TV last night, because it .
昨晚我没有看电视,因为电视机坏了。
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Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.
今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。
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I'm running my simile to an extreme.
我比喻得过头了。