多壳的

The multistage construction analysis method has been successfully used to simulate the whole erection process of a 102m-span barrel vault grid structure and a 118m-span double-layer spherical reticulated shell.

并运用多阶段施工全过程跟踪数值理论进行了两算例分析：某102m跨度大型柱面网壳结构的累积滑移施工与支架滑移施工的理论模拟，某118m跨度双层球面网壳结构悬臂施工的全过程理论分析。

The mantle cavity is lateral and in most bivalves, the gills have a respiratory and digestive function.

双壳贝的外壳是由外套膜分泌而来，套膜包覆著内脏，在多数双壳贝中，外套腔多位於两侧，鳃具有呼吸和消化的功能。

A small tropical cephalopod of the genus Spirula having prominent eyes and short arms and a many chambered shell in a .

旋壳乌贼属的热带小型头足类动物，眼睛突出，臂短，多个隔间的壳成扁平的状。

In this paper, the structural characteristics and the handedness of papovaviruses capsid with icosahedral lattice are introduced indetail, and capsomer contacts are comprehensively analyzed.

本文介绍了乳多空病毒二十面体的结构特征、点阵手性，分析了其衣壳结构和壳粒的相互作用。

First mostly contraposing hull deck structure it goes along FEA analysis, discuss the different influence degree of calculational results between the different simplifications of the mathematical model, thereinto mostly analyse five different simplifications of the deck model; Second contraposing hold section and hull deck structure it goes along FEA analysis together, discuss the different influence degree of calculational results between the different elements style, gridding number and gridding density, thereinto mostly analyse the difference between adopting 8 node shell element and 4 node shell element, nondense gridding and thick gridding, and numerous gridding number and few gridding number, In the end mostly contraposing hold section structure it goes along FEA analysis, discuss the different influence degree of calculational results between the different boundary conditions, thereinto mostly analyse the difference between adopting CCS boundary conditions and LR boundary conditions.

首先主要针对船体甲板结构进行分析研究，讨论结构简化不同对有限元计算结果的影响程度，其中主要研究分析了五种不同甲板结构简化模型；紧接着针对舱段与甲板结构一起进行分析研究，讨论单元类型，网格数量与密度的不同对有限元计算结果的影响程度，其中主要研究分析了分别采用8节点板壳单元与4节点板壳单元的不同，以及分别采用疏的网格与密的网格，多的网格数量与少的网格数量的计算结果的差异。最后主要针对舱段模型进行分析研究，讨论不同的边界条件对有限元计算结果的影响程度，其中主要研究分析了分别采用CCS舱段边界条件与LR舱段边界条件进行有限元计算而带来的结果上的差异。本文第二部分为港工建筑物中的大直径薄壁圆筒结构的有限元比较分析。在研究大圆筒的有限元比较分析中，主要讨论用不同的网格密度与数量来划分网格引起的差异。其中用了网格密，数量多与网格疏，数量少两种模型进行大圆筒结构的有限元分析对比

Effects of alkali concentration, extraction temperature, ratio of solid to liquid and extraction time on yields of xylan were analyzed.

以稻壳为原料，采用制备综纤维素再碱提取的方法，分析了不同碱溶液浓度、温度、固液比和时间对稻壳半纤维素中多戊糖得率的影响。

To improve the characteristic of stamping process for lamp holder shell,the operation principle and structural design of multi-position progressive drawing and blanking die for lamp holder shell were described.

针对灯头壳零件的结构特点和生产要求，介绍了灯头壳多工位拉深级进模的结构设计要点和工作原理。

The nuts were originally described as being separate from the cupules except for the basal part, but the authors found a considerable portion of the nut to be adnate to the cupule.

原描述说坚果除基部外均与壳斗离生，但作者发现相当多的坚果是与壳斗贴生的。

The simulation results shows that when the hydroforming for real axle housing needs two bulge processes and the specific value of the two bulge ratio is about 1, the result is the best one; To obtain an appropriate route of loading force need adjust internal pressure and axial compression force for many times and according to the failure, the size of the two forces which has been mentioned can be rapidly and rationally adjusted; Because of good greasing conditions influencing largely, reducing the friction between tube blank and die inside surface as well as possibly not only makes more materials flow into the bulge area but effectively diminishes the axial compression force; The good or bad characteristics of tube blank material is also one of the decisive factors and when material is selected, we first consider its' formability.

模拟结果表明，当后桥壳需要两次进行胀形，两次胀形比比值约等于1时，胀形结果最好；合适的加载路径要经过多次调试，能根据胀形缺陷对内压力和轴向力的大小进行迅速地合理调整；良好的润滑环境对后桥壳液压胀形的影响巨大，要尽量减小管坯与模腔内壁的摩擦力，不但使更多的材料流入胀形区，而且能有效的降低轴向力的大小；管坯材料性能的好坏也是影响胀形的决定性因素，选材时首先要考虑材料的成形性。

The mechanical properties of pure chitosan scaffolds, pure collagen scaffolds, composite single-layered scaffolds and biomimetic multilayered scaffolds were compared.

对比了纯壳聚糖支架、纯胶原支架、胶原壳聚糖复合材料单层支架和仿生多层支架在干燥和湿润两种状态下的力学性能。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。