上壳

The general method of calculating unit length induction of infinite length electric cable is proposed according Loop induction.

两个同轴导体圆柱壳，当其长度远远大于半径时，这样的导体即为物理上"无限长"的电缆。

Extraction resistance of the cartridge case worked out by finite element simulation according to above condition is in good accordance with the results from experimental tests.

在此基础上通过有限元分析获得的药筒抽壳阻力与实际测试结果一致。

Through the inversion based on finite element analysis, it is revealed that the transient temperature rise on the case body,as a result of firing heat impact,is a key factor dominating the residual deformation and extraction resistance of the cartridge case. The distribution of transient temperature increment on case body is also obtained.

通过有限元反演计算，揭示了筒体上热冲击引起的瞬态温升是决定药筒残余变形和抽壳阻力的一个关键因素，得到了筒体瞬态温度增量分布规律。

Cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitions.

产于印度和太平洋的头足类动物，螺旋状的壳上有浅色珍珠状分隔线。

Like the chambered nautilus, my growth seems to be a spiral in which each chamber grows nobler than the last.

就好像鹦鹉螺壳上一圈圈的纹路，我的成长看起来也是螺旋形的，一圈接一圈，越来越漂亮。

Like most of the other houseboats at Cheyne Walk, the boat is a steel-hulled barge, in this case probably built in the 1950s, with a wooden structure built on to it as living space.

与位于夏纳步道上的其它房艇一样，这也是一艘钢壳游艇，大约建造于20世纪50年代，上面加盖了一座木制结构作为居住空间。

Results MRI of all WE patients showed symmetrical high signals on the brain T2WI, Flair and diffusion weighted imaging, 6 cases of them in the medial thalamus, 4 cases in surrounding the aqueduct, 3 cases in the third ventricle gray matter, 2 cases in the mamillary bodies, 1 case in the putamen,1 case in the optic chiasm, 1 case in the superior cerebella vermis and 1 case in the subcortical white matter; 2 cases had reinforcement effect. 2 cases showed no abnormal signals on T2WI and Flair early, but showed high signal symmetrically in the medial thalamus on DWI imaging.

结果 8例WE患者MRI示脑部T2WI、Flair成像及弥散加权成像有对称性异常高信号影，其中出现在丘脑内侧6例、中脑导水管周围灰质4例、第三脑室周围灰质3例、乳头体2例及壳核、视交叉、小脑上蚓部、皮质下白质各1例；2例有增强效应。2例发病早期T2WI、Flair无异常信号影，DWI示丘脑内侧对称性异常高信号影。

At last, for the limition of the swarm model based on minimal circumcircle method, we extend the model to n-dimensional spaces; study the aggregating swarm behavior and flocking behavior; and analysis the stability of system.

本文最后针对基于最小外接圆方法的群集模型的局限性，在前人的研究基础上，采用求解任意维空间点集的凸壳的方法，将该模型推广到n维空间中，对n维空间中群体的聚集以及迁徙行为进行建模和稳定性分析。

Before the snipe drew back its beak, it was gripped tightly inside because the clam suddenly felt a sharp pain and closed its shell quickly.

就在鹬将它的嘴收回之前，它的长嘴被蚌紧紧地咬住了，因为蚌突然间感到一阵剧痛，于是很快地紧紧的合上了它的壳。

Based on the covering-domain method, an expression for calculating the interior scattering sound field of an arbitrary-shaped closed thin shell in which there are some scatterers is given theoretically.

应用覆盖域方法从理论上研究了复杂形状封闭薄壳内部存在散射体时的内部散射声场。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。