查询词典 turtle shell

Four-node degenerated shell element and rigid shell element are used in our FEM model.Updated Lagrange formulation and rate form constitutive equation are adopted to solve the problem of large strain and large rotation in sheet forming process.Sheet metal material property is described by plastic anisotropy yielding model and isotropic hardening model.Master surface-slave surface contact model is used to define the contact between tools and blank.Contact constraints are enforced with a kinematic algorithm and friction stress is computed by Coulomb friction law.Dynamic relaxation method is used to treat springback after forming stroke.

四结点蜕化壳单元和刚体壳单元分别用来建立板和模具的有限元模型；更新Lagrange法和速率型本构关系被用来处理板料变形中的大应变和大转动；材料模型采用塑性各向异性屈服与等向强化模型；通过主从面模型定义板料和模具的接触，接触算法采用运动约束法，摩擦力用库仓定律计算；并利用动力松弛法对回弹过程进行了计算。

They include lobster; prawn; abalone; pearl-shell; grouper; jelly-fish; sea-cucumber and fifteen types of oysters. There are 580 kinds of fish, 527 kinds of shell fish and 32 kinds of prawn .

这里的海产资源十分丰富，盛产龙虾、对虾、鲍鱼、珍珠贝、石斑鱼、海蜇、海参和各种各样的蚝；计有鱼类580种、贝类527种、虾类32种。

Based on the Lagrangian equation with dissipation function, the motion equation of a microbubble with shell is obtained, and the dynamic characteristics of microbubble with shell in free space are studied. It shows that the inner and outer maximum radii of the microbubble increase when the acoustic pressure and its initial radius increase, as well as when the ultrasonic frequency decreases.

理论上利用有耗散函数的Lagrange方程，建立了有壳微泡的R运动方程，开展了自由空间中有壳微泡动力学特性的研究，表明微泡内外半径增量随声压的增大、超声频率的降低、初始内径的增大及壳厚的减薄而迅速增大。

In this paper, the effect of imperfections on stability of the sheet—space latlice shell and the single layer lattice shell is investigated on theory and experiment.

本文针对板片空间结构体系的稳定和缺陷对其稳定的影响进行了理论分析和试验研究。

Mother shell, leaching beans, beans without flowering, they will catch the cook shell melon mother

17日，母亲壳牌，浸出屙尿豆，豆不开花，他们将赶上库克壳瓜子母亲

The core-shell microstructure through in-situ polymerization with calcium sulphate as core and with methyl methacrylate as shell was prepared.

采用界面原位聚合方法，制备以硫酸钙(CaSO4)粒子为核，甲基丙烯酸甲酯为壳的核壳结构。

In view of the feature of filter shell body and the formability of HPb59-1 brass,the warm forging process was adopted to manufacture the precision forgings of shell body for the microwave communication apparatus.

针对滤波器外导体的结构特点和HPb59-1黄铜的成形特性，采用温锻精密成形加工方法对滤波器外导体的内孔型腔进行了近净成形加工。

Add-on enters certain volume the peanut shell smashing the caustic soda solution, withdraws the mignonette element using the microwave method from the peanut shell.

摘要以花生壳粉为原料，加入一定体积的氢氧化钠溶液，利用微波方法从花生壳中提取木犀草素。

Therefore, the molarity ratio of Au/Ag played an important role for the formation of core-shell structure. The dense core-shell structure was obtained after heat treatment.

其断面可辨识具有黑色之晶格以银为主，当莫尔浓度在1 ： 4之下，呈现较为均匀之核-壳结构，此为较多的银与金之金属电位交换消耗，达到较为平均之厚度。

Through model test of new high- strength steel conical shell with ring frame ,and relevant analysis,it is shown in this paper that the failure of ring-framed conical shell can be traced to the neutral plane on longitudinal section where the structure strength is relatively weak.

通过新的高强度钢材环肋圆锥壳模型实验，及采用解析方法分析表明，环肋圆锥壳体破坏的原因是结构相对薄弱处纵剖面上的中面应力所致。并提出用"灰色系统"理论预测破坏载荷的计算方法，建议今后模型实验和现役潜艇的耐压船体寿命估算中可采用这种方

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。