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The main factors affecting the soil-structure interface behaviors were found experimentally and theoretically, including: 1 the thickness of the interface that is five to six times the average grain size of the soil; 2 the aeolotropy of interface, which is responsible for anisotropic response of the stress-strain response of the interface; 3 two physical states, including crashing and compression of the soil near the structure surface, which govern the stress-strain response of the interface strongly; 4 two shear deformation components due to sliding and constraint of the structure surface relative to the soil respectively, which forms the deformation of the interface; 5 the volumetric strain due to dilatancy, which is found to be composed of a reversible dilatancy component and an irreversible dilatancy component. 4. A unified constitutive model of the interface, based on new elasto-plasticity damage theory, was developed. It was confirmed to be effective for the conditions considering monotonic and cyclic shearing, coupling effect of shear and volumetric strains, evolution of physical state, micro-structure aeolotropy of the soil and the resulting aeolotropy of the interface as well as the three normal boundary conditions stated above. 5. 2D and 3D finite element formulations of the present model were derived and incorporated into the FEM codes. They were applied to the evaluation of practical engineering problems with different typical interfaces between soil and structure. The new model was shown to be reasonable and effective.

确定了粗粒土与结构接触面厚度约为5~6倍的平均粒径,首次揭示了接触面的细观结构异向性以及由此所引起的宏观剪切异向性,发现了在单调和往返剪切荷载作用下土颗粒破碎和剪切压密两种物态变化机制共同支配着接触面力学性质的变化,通过细观分析证实了接触面的变形可分解为一般同时发生的土与结构交界面上的滑移变形以及结构面位移约束范围之内土体本身的剪切变形两部分,观测到接触面受剪时表现出明显的相对法向位移,并可分解为可逆性和不可逆性两个分量;(4)建立了第一个能够统一地描述单调与往返剪切特性、剪应变与体应变耦合特性、细观结构和宏观剪切异向性以及土颗粒破碎等物态变化特性的土与结构接触面弹塑性损伤本构数学模型,并采用多种法向边界条件复杂加载路径的试验成果验证了新模型的合理性和有效性;(5)提出了新模型的二、三维有限元格式并结合实际边值问题进行了应用计算分析,比较了不同接触面本构模型对计算结果的影响,证实了新模型及其有限元格式不仅能够合理地描述土与结构接触面的主要力学特性,还能够较好地反映土体与结构物在接触面处的滑移、脱开等不连续现象。

One of two sperm get into an archegonium and fused with egg. The nucleus of fertilized egg began to divide, and the walls were formed after the third division. The eggs without fertilization divided two times and then disappeared.

雄配子体产生的两个精子中的一个进入颈卵器与卵细胞结合形成受精卵,受精卵核到第3次分裂形成细胞壁,没有受精的卵细胞还要进行两次有丝分裂后才消失。

The times given in the tables are accurate to within two or three hours for 25 to 5 BCE, and one or two hours for 4 BCE to 38 CE.

时代给予在该表是准确的,以两个或三个小时,为25日至5 bce ,和一个或两个小时为4 bce至38行政长官。

In contrast, the largest decrease or non-ferrous metals and real estate these two plates, many of which the first three quarters of the stock fell more than 70 percent, such as van den Bergh, a decrease of 81.72 percent stake, China Sports Industry decrease of 83.54 percent, or more than 80 % of A shares have 15 cities, which hit two folding stocks and shares last year, up 10 times in stark contrast.

相反,跌幅最大或有色金属和房地产这两个板块,其中许多是前三个季度的股票跌幅超过百分之七十,如布宏达,有百分之81.72的股份减少,中国体育产业的百分之83.54,跌幅超过80%的A股跌幅有15个城市,击中了两款折叠股票,比上年增长形成鲜明对比的10倍。

The following results were obtained: 1. Several multi-pore materials were compared and a nylon membrane was choosed to conduct experiments. 2. Two devices and methods for controlling negative hydraulic heads were developed. Coupled with the devices, a system for precise control of soil moisture udring pot experiment was developed. 3. Two times of pot experiment studying wheat seedling growth under precise soil moisture control were conducted. Some very important results were obtained. 4. Capillary rise, horizontal and vertical infiltration under different nagative hydraulic heads were observed. The concepts of "critical wetting distance" and "wetting coefficient" were proposed. The linear relationship between wetting front movement distance and cumulative infiltration amount was confirmed. Spatial distribution model of soil moisture and its simple derivation method were established.

通过该项目支持,获得了以下的研究成果: 1、比较和检验了不同多孔材料,初步选定了用于水分控制的多孔膜材料; 2、完成了两种负水头控制方法与装置的研究,并制作了仪器,与负水头控制装置配套,制作了盆栽实验用水分精控盆; 3、进行了两期小麦苗期水分精确控制盆栽实验,获得了一系列重要结论; 4、进行了不同负水头下土壤的毛管上升、水平入渗、垂直入渗研究,提出了临界湿润厚度、湿润系数两个概念,确定了湿润锋与入渗量的线性关系、土壤含水量的空间分布模型,土壤含水量空间分布的简单推算方法。

A unit used to express relative difference in power or intensity, usually between two acoustic or electric signals, equal to ten times the common logarithm of the ratio of the two levels.

分贝通常表示两个声音信号或电力信号在功率或强度方面的相对差别的单位,相当于两个水平的比率的常用对数的十倍

The two kinds of times tell two kinds of connotative Chinese culture.

两种截然不同的时代背景,让他们代表了两种内涵的中国文化。

Methods This study was done in 100 case/times who needed blood gas analysis were equally randomized to two groups. The control group was given traditional puncture and the experiment group was given QVNI to collect blood from radial artery. The one-time-success rate of puncture and ecchymoma incidence were compared between the two groups.

收集100例次需检测血气分析的病人,随机分为两组,各50例,对照组采用传统法进行桡动脉采血,观察组采用垂直快速进针法进行桡动脉采血,观察两组一次穿刺成功率及皮下瘀血发生率,并进行比较。

During 20minutes needles retaining, do moxibustiton above the route of LI20-DU23 until erubescence in the forehead and ignite two moxa sticks about 1cm to apply above double St36 until it burn out, As for the patient of deficiency of kidney-yang, do warm moxibustion on CV4 for 30 minutes, once every two day, 15 times a course.

留针时以药艾条重灸迎香-上星处,以患者前头部温热,局部皮肤潮红为度;足三里待针刺得气后,用长约1cm的艾条点燃后插于针尾处,燃尽为止。肾阳虚者,加艾条温和灸关元30 min。针灸隔日一次,15次一疗程。

In a year for two times poineering failure of ground of infuriation of break out of elated, interest, interest, after doing poineering work to fail again, he began to think over, feel handicraft is one of popular products that had better sell on the net from beginning to end, there still are many moneys in the hand anyway, he continues to regard business as handicraft, but this moment already unlike at the outset, a year of two at hand after be defeated are very close, not allow he buys ad of search contest price on the net, advertisement puts in in relevant website, then, he begins to write soft article painfully, had not written a thing a lot of years, can toughen one's scalp-brace oneself is written, won't write write running water account book, had written past rich each are guest, big go sending in forum, those who lean is manual work, stay up late everyday before dawn 45 bits, sent the flexible language of half month, received the first only business eventually, 100 much.

在一年两度兴高采烈、兴致勃发、兴趣激昂地创业失败,创业再失败以后,他开始了反思,觉得工艺品始终在网上是最好销的热门产品之一,反正手里还压着不少货,他就继续将工艺品作为业务,但这个时候已经不象当初,一年两败后手头很紧,不容他在网上去买搜索竞价广告,在相关网站投放广告,于是,他开始费力地写软文,好多年没有写过东西,只能硬着头皮写,不会写就写流水帐,写好了往博客、各大论坛里去发,靠的都是体力活,每天熬夜到凌晨四五点,发了半个月的软文,终于接到了第一单生意,100多。

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推荐网络例句

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到,其中4cumylphenol为新天然产物。

But this is unbelievable .too much.

但是这太令人难以置信。