查询词典 helmet shell

The upper shell and the lower shell are provided with an operating window for rotating the intermediate shell and a driven portion, which is engaged with a rack bar passing outside the operating window for rotating the intermediate shell up to a predetermined position, is provided on an external peripheral face of the intermediate shell.

上壳体和下壳体设置有用于旋转中间壳体的操作窗口，与通过操作窗口外侧的齿条配合用于将中间壳体旋转到预定位置的从动部分设置在中间壳体的外周边表面上。

Production plant is built by Liwo machining centers, CNC horizontal boring and milling machines, CNC milling machine portfolio composed of "soft-shell parts production line": production block, cylinder head, gearbox, and other high technology content Shell exports of parts and vehicles and Liwo Liwo CNC machining centers, and other components of the "revolving line of processing": processing the internal combustion engine piston, cylinder differential top shell, shell reducer such as automobiles, engineering machinery, Agricultural machinery industry with high technical content in the rotating parts, as well as between the rotating shell parts and exports between the parts production.

现生产工厂已建由立卧加工中心、卧式数控镗铣床、数控组合铣床组成的&壳体类零件准柔性生产线&：生产缸体、缸盖、变速箱等各种技术含量高的壳体类出口零件；以及数控立卧车和立卧加工中心等组成的&回转体加工线&：加工内燃机活塞、缸头等差速器壳体、减速器壳体等汽车、工程机械、农机行业中技术含量高的回转体零件以及介于回转体和壳体类零件之间的出口零件生产。

Its shell is divided into two parts. Its cranium is like a half helmet. There are things like the eyes in the front of its shell, 6 pairs of airholes and hard teeth of double layers in two sides of its back. There are the thin, sharp and hard thorns on its shell. Its tail is triangular, which can move about.

其壳分为两部分，头盖形似半只钢盔，壳背前端有眼状物，两侧对称分布气孔6对；背甲布细尖硬刺，边有双层细长硬齿；尾呈三棱形整体，根部可动。

In order to protect helmet cap shell, the helmet must have certain thickness, and cause the increase of the material cost and weight.

为保有头盔帽壳具一定的强度，头盔须具有一定的厚度，而造成材料成本与重量的增加。

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。

At the time of some modeling in structure, according to the characteristic of the rotating shell, the article adopt finite strip method to analyse to the shell, and discretes the rotating shell along the axis to a series of cylindrical shell to set up mold of curved surface ,not only guarantee to calculate the precision as well as raise the efficiency, but can deal with more complicated structure.

在结构部分建模时，根据旋转壳体的特点，对壳体采用有限条法进行分析，将旋转壳沿轴向离散成一系列的锥状或柱状条，对结构旋转曲面进行建模，既保证计算精度又能提高效率，而且可以处理比较复杂的组合结构。

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。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。