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Moving load ; Mach number ; ground vibration ; finite element method ; thin layer element

移动荷载；马赫数；地基振动；有限元方法；薄层单元

The flame retardant molding compositions include an epoxy resin; a first transition metal oxide containing a refractory metal, such as tungsten trioxide; and a second transition metal oxide containing an oxyanion of a Group VIA element and a cation of a Group IIA element, such as calcium molybdate.

该阻燃模塑组合物包括环氧树脂、含高熔点金属的第一种过渡金属氧化物如三氧化钨；和含VIA族元素的含氧阴离子和IIA族元素的阳离子的第二种过渡金属氧化物如钼酸钙。

The beam element and truss element are discussed to build the mast model respectively.

阐述了用梁单元和杆单元来描述的桅杆杆身有限元模型。

Based upon the force-bearing characteristics, the combined finite element model of beam elements, truss elements and cable elements is selected, and an incremental-iterative nonlinear finite element technique is developed to analyse the dynamic response of the long span hybrid spatial structure of cable-supported lattice shells.

本文根据新型大跨空间杂交结构―索承网壳结构的受力特点，选用梁元、杆元和索元的混合有限元模型，给出了一种有效的适用于该类结构的非线性动力响应的增量、迭代有限元计算方法。

These algorithms include the calculation of the geometry dimension of the transmission gear, the automatic generation of the tooth profile plane model and the finite element grid of the gear model, and automatic completeness of the finite element analysis of the transmission gear.

本论文集变速器齿轮几何尺寸计算、齿廓平面模型自动生成、齿廓有限元网格自动生成及齿轮模型ANSYS有限元分析自动完成于一体，并提供可被其它有限元程序和软件使用的数据。

At the beginning of April, stationmaster people discovery, in page of Baidu search element, search element the page that any keyword appears, lower part did not see the link of more and relevant keyword suddenly, in stationmaster group a mighty uproar was caused in SEO especially, tongue-lash Baidu narrow-minded.

4月初，站长们发现，在百度搜素页面中，搜素任何一个要害词出现的页面，下方忽然不见了更多相关要害词的链接，在站长群尤其是SEO中引起了轩然大波，大骂百度小气。

After that, the aforementioned flow field in metering section of the triple-screw extruder with single-thread elements and 45mm pitch has been calculated too for the purpose of comparing the difference of flow fields between the single-thread element and three-thread element.

还以螺距45mm的单头螺纹元件为代表，计算了由单头螺纹元件构成的上述流场，分析、比较螺纹头数对流场的不同影响。

Finite element analysis method was used to analyze a three-leaf spring under vertical loads, in which the brick element of eight nodes was used to model the spring leaves and the contact analysis was introduced to simulate the process of the leaves gradually coming into contact with each other.

应用有限元法对一种在垂直力作用下的3片式钢板弹簧进行分析，其中应用8节点块单元对板簧进行实体建模，采用接触分析来模拟板簧各片逐渐进入接触的情况。

The 3D elastic mechanics and finite-element structure analysis priniple were provided.The mechanics characteristics of the three-faced aluminous rotating mirror were analyzed,and the finite-element model was established.

给出了3维弹性力学空间问题基本方程和有限元结构强度分析原理，分析了三面体铝合金转镜空间结构强度的力学特征，建立了有限元模型，分析了其在轴孔与轴的3种配合关系下的应力分布。

A catch (144) associated with the back end of the spring element (140) coupled with the mandrel (56) at the other end cooperates with shoulders on smooth surfaces within the cavities to retain tension within the spring element.

与弹性元件(140)的后端相连的卡子(144)与空腔内光滑表面上的凸肩相协作以保持弹性元件的紧张状态，弹性元件(140)的另一端与心轴(56)相连。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。