查询词典 cylindrical shell

The results show that as the distance of waveguide to mirror is short, the couple efficiencies for EH11 mode of the cylindrical mirror and the spherical mirror are similar but the cylindrical mirror has stronger restraining function on EH21 and EH12 modes, and as the distance of waveguide to mirror is long, the cylindrical mirror has more restraining function on EH21 mode and less restraining function on EH12 mode.

同时相对球面反射镜，柱面反射镜对EH21模和EH12模具有更强的抑制作用。在d较大时，相对球面反射镜柱面反射镜对EH21模的抑制作用将会变得更强，而对EH12模的抑制作用将会减弱。标签 laser technique reflection coupling diffraction waveguide laser square waveguide cylindrical mirror

Vesic's solutions to cavity expansion that include cylindrical cavity expansion and spherical cavity expansion are introduced. Then cylindrical cavity expansion theory is applied to study compaction effect of pile driving in saturated soil. Based on the results of conventional triaxial tests, a trilinear curve model is used to simulate stress-strain curve of strain-softening materials. Meanwhile, trilinear curves are also used to simulate curves of volumetric strain, minor principal strain and major principal strain. By using elasto-plastic theory, analytical solutions to cylindrical cavity expansion in strain-softening soil are presented. According to the mechanism of statically pressed pile driving, compaction effect of pile tip can be viewed as hemispheric cavity expansion. Therefore spherical cavity expansion theory is applied to obtain the solutions to stress, strain, displacement fields and final pressure. Resistance force of pile tip is calculated to estimate static pressure.

介绍了Vesic关于圆孔扩张问题的解答，其中包括柱形孔扩张问题和球形孔扩张问题，并应用柱形孔扩张理论分析了饱和软土中的沉桩挤土效应问题；在常规三轴试验成果的基础上，采用三折线模型模拟具有应变软化性质的岩土材料的应力应变关系曲线，分析了在应变软化土体中沉桩时桩周土的位移场、应力场和应变场的变化，得到了解析解答；分析了静压桩的沉桩机理，并利用球形孔扩张理论，视桩端处的挤土为半个球形孔的扩张，分析了桩端处土的位移场、应力场和应变场的变化，并根据最终扩张压力计算出沉桩时的桩端阻力，可作为压桩力的估算。

In this paper, we proposed a new method of coupling in terms of the request of the intersatellite optical communication system. Using an aspherical cylindrical lens whose front cylindrical lens is orthonormal to its back cylindrical lens collimates the laser beam, and then is focused by a GRIN lens and couples to the single-mode fiber.

针对星间光通信系统的要求，本文采用一种新型的半导体激光耦合方案，用前后正交的非球面柱面透镜准直半导体激光束，再经渐变折射率自聚焦透镜聚焦耦合入单模光纤。

Based on the shell element degraded from the continuous body, concrete and configured steels are modeled by the layered shell element, and the vertical steels burdened with added loads are completed by the combined shell element. Then, with the smeared crack model, associated flow rule and Madrid hardening model, the material nonlinearity of the concrete is depicted. The stiffness matrix of nonlinear thin-walled shell element is deduced. As for RC multi-T girders subjected to transverse loads, the properties, such as crack expanding and steel yielding, are studied.

基于实体退化壳单元理论，采用分层单元模拟了混凝土和构造钢筋，采用组合单元模拟了受力纵筋；并利用弥散裂缝模型、关联流动法则和Madrid强化准则等来描述了混凝土的材料非线性，推导了非线性薄壁壳单元的统一单元模式，研究了横向荷载作用下RC多T梁上部结构的裂缝发展和钢筋屈服等性能。

Corbicula fluminea (Müller 1774) was bred in the laboratory and two shell samples (shell height, A=13 mm, B=9 mm) were selected to determine the carbon isotopic composition of the increment shells (aragonite, CaCO3) and the host water. The results indicate that the carbon isotopic compositions of the two shells increased as the δ^13 C values of the host water increased from -5.24‰ to 1.41‰, showing the influence of δ^13C values on the shell carbon isotopes.δ^13C value ranges from -4.76% to -2.09% and δ^13 C from -8.49% to -2.89%. The δ^13 C values of shells A and B are both more negative than the predicted equilibrium ones, indicating that the shell had used the metabolic CO2 rich in 12C during their growth process.

对双壳类河蚬进行了室内养殖，并选取两个壳体样品（壳高，A=13 mm， B=9 mm），测定其生长部分壳体和生长期间水体碳同位素，研究表明，随着水体碳同位素的升高（δ^13C由－5.24‰升至1.41‰），两壳体碳同位素也随之升高，表明水体对壳体碳同位素的影响；δ^13CA分布范围为－4.76‰~-2.09‰，δ^13CB为－8.49‰~-2.89‰，壳体A和B碳同位素均比预测平衡值偏负，表明壳体在形成过程中利用了新陈代谢产生的富集12C的CO2。

This paper examines the soil characteristic and liquefaction degree of hard shell seams at the subaqueous delta of the Yellow River. Four typical areas were chosen for measuring, testing and studying. The hard shell seam strength was measured by in-situ Proctor penetrometer. Undisturbed soil sample of 1 m long was excavated for laboratory soil property test. Sledge hammers were dropped down freely to hit the load board to simulate the wave force acted on the hard shell seam. The excess pore pressure and strength variation were observed. The liquefaction depth of the hard shell seams at four study areas under different wave storms were calculated by theory.

为揭示黄河口水下三角洲硬壳层的土性特征和风浪作用下的液化破坏状况，选择典型研究区，在现场利用普氏贯入仪测试硬壳层的强度特征，原位取1m原状样进行室内土工试验；利用重锤锤击荷载板的方式模拟波浪对硬壳层的动力作用，通过孔压探头和普氏贯入仪实时监测土体内孔压和振动前后强度的变化；通过理论计算研究硬壳层在不同风浪等级下的液化深度。

With superb technology and advanced equipment coupled with the strict management, so I plant Main Products: shell craft jewelry, shell mosaic, shell carving, shell craft accessories, etc., well received by the major wholesalers and foreign trade companies, etc. clients.

有了精湛的技术和先进的设备再加上严格的管理，使我厂主营产品：贝壳工艺首饰，贝壳马赛克，贝壳雕刻，贝壳工艺配饰等等，广受各大批发商及外贸公司等客户的青睐。

Mainly engaged in: freshwater pearl wholesale, pearl necklace, pearl bracelet, pearl jewelry, pearl processing, and pearl jewelry; shellfish processing, shell necklace, shell bracelet, shell jewelry, conch shell carving crafts; Huian shadow carving, stone carving craft draw; agate, crystal, jade, horn comb; jewelery, fashion accessories, marine series shells, conches, handicrafts, tourism souvenirs, business gifts, natural crafts and so on.

主要经营：淡水珍珠批发，珍珠项链，珍珠手链，珍珠首饰，珍珠加工，珍珠饰品；贝壳加工，贝壳项链，贝壳手链，贝壳饰品，贝雕海螺工艺品；惠安影雕，石雕工艺画；玛瑙，水晶，玉石，牛角梳；珠宝首饰，时尚配饰，海洋系列贝壳，海螺工艺品，旅游纪念品，商务礼品，天然工艺品等。

Vehicle lubricants: Heineken Shell gasoline engine oil, Shell Rimula diesel engine oil, Shell Road, Lu Da X-100 engine oil, transmission fluid dynamics Shi, Shi Beili hyperbola gear oil, Shell tank Po.

壳牌喜力汽油发动机油，壳牌劲霸柴油发动机油，壳牌路路达 X-100 发动机油，动力施变速箱油，施倍力双曲线齿轮油，壳牌水箱宝。

All the atomic shells for the examined atoms are shown and the """"""""reasonable"""""""" electron numbers are given. Especially for atomic subshell and shell structure of transition elements are correctly predicated. This theory provides uniform and objective criterion for shell structure of isolated atom, and the intrinsic and theoretical basis for the shell structure given by other methods. This theory provides a kind of new method for describing the atomic shell structure.

该理论可以揭示原子的全部壳层结构，产生基本合理的电子数，尤其是正确的预示了原子的亚壳层结构和过渡元素的壳层结构；依据该理论所确定的原子内禀壳层结构为孤立原子的壳层结构提供了统一的客观标准，为其它方法所确定的壳层结构提供了内在的理论依据；原子内禀壳层结构理论为度量孤立原子中处于束缚态下电子排布的壳层结构，提供了清晰的物理图像，为描述原子的壳层结构提供了一种新方法和新理论。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。