几何结构

Aimed at a changing power mechanism, a ratchet mechanism with double electric pawls, we introduce the operating principle, establish its model and optimize the important geometry parameters in its structure design in this paper. This founds a basis of next step for optimum design of its structural dynamics.

针对一种动力转换机构－弹性双棘爪棘轮机构，介绍了它的工作原理，对其结构设计中的重要几何参数建立了模型，进行了优化，为下一步的动力学优化设计打下了基础。

Mathematic morphology is applied to yarn neps detection in textile industry.

论文研究了数学形态学理论，对基本形态学算子的几何意义与性质进行了归纳与总结，阐述了数学形态学用结构元素&探测&信号的本质。

Wheel, track and walking wheel are three main kinds of the walking mechanisms on the developed air-cushion vehicles.

目前已开发的气垫车辆所采用的行走机构有轮胎、履带、步行轮等三种，虽然气垫车的垫升机构可以明显降低它们的接地比压从而减少了行驶阻力，但依然存在着行走机构自身重量大，结构复杂以及在软湿地面上的滑转、粘土等一系列问题，另外，限于行走机构的几何尺寸影响，这些车辆的抓地位置仅作用于表层土壤，对于表层土壤含水量严重饱和并且硬底层较深的地面来说，甚至使车辆无法行驶和作业，严重阻碍了气垫车辆的推广应用。

The small-scale vortices are generated near the inner shear layer. The wavy surface (at 20m/s) will generate smaller scale vortex than the smooth plate.

并在相同的壁面几何形状条件下，在不同的流动工况下，研究了非光滑表面对湍流边界层拟序结构的影响。

We have studied silica single and double chain based on two-membered ring and nanotubes based on three-membered ring using the density-functional theory at 6-31G level.

运用密度泛函理论，在6-31G基组水平上，对二元环组成的Si02单链、双链纳米线和三元环组成的纳米管进行几何优化，并对其结合能、电子结构和振动频率进行计算。

We have studied silica single and double chain based on two-membered ring and nanotubes based on three-membered ring using the density-functional theory at 6-31G level. The average binding energy, electronic structure and vibration frequency were calculated.

运用密度泛函理论，在6-31G基组水平上，对二元环组成的SiO2单链、双链纳米线和三元环组成的纳米管进行几何优化，并对其结合能、电子结构和振动频率进行计算。

Based on both geometry and material nonlinearity, new FEM refering "tube to tube" contact based on beam and truss elements, is employed to shape prediction.

考虑了几何非线性和材料非线性，将&管—管&接触算法应用于梁、杆单元组成的结构模型中，与传统建模和分析方法相比，成形预测精度大幅度提高。

An analysis is made of causes for side abrasion of speed\|increasing straight switch from track geometry, structure and status of switch component, and dynamic performance of switch with passing train, and routine maintenance, etc.

从轨道几何状态、道岔转辙部分结构特征及其状态、列车过岔动态特征和日常保养等方面，着重分析提速道岔直尖轨产生侧磨的原因，并阐述整治该病害采取的综合措

Aimed at the large deformation problem of industry cooling tower shell, the mathematical model for the random response of rotational shell under the external random excitation is established by statistic perturbation method.

针对工业冷却塔结构大变形的随机动力问题，利用统计摄动方法，考虑旋转壳法向几何非线性及随机激励作用，建立了旋转壳的非线性随机动力响应数学模型。

PWR of Daya Bay Unit 1 is selected as a referenced reactor type,and a new assembly including 36 thorium dioxide elements and 4.2% enriched 235U is designed without change of physical dimension and structural materials of assembly and core.

以大亚湾第1机组压水堆为参考堆型，不改变反应堆栅元、组件和堆芯的结构与几何尺寸，设计出含36根钍棒、4.2%235U富集度的新型含钍组件，并对含钍组件和3.2%富集度的铀组件进行中子学计算和分析。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。