下壳

These nanowires appear to form mostly discrete, helical multishell structures of specific "magic" sizes and shapes, and each tube consists of a triangular sheet folded cylindrically onto itself.

这些纳米线大都为离散的、特定幻数尺寸下的螺旋多壳结构，每个管由三角网格自相叠加而成。

The governing equations of laminate-faced sandwich cylindrical shallow shells based on the first-order shear theory with large deflection are high-order partial differential equations. Four dependent functions are involved.

大挠度剪切理论下复合材料夹层圆柱扁壳的稳定性控制方程是一组非线性高阶常系数偏微分方程，其中包含四个独立的函数，它们分别为横向挠度w、参考曲面的法线转角Φx、Φy和应力函数F。

In this paper, a detail analysis of the circumferential through-crack in the cylindrical shells with different boundary restraints is performed by means of the elastic-plastic finite element method. The results obtained provide the application of some analysis methods of elastic-plastic fracture parameters such as Dugdale model with a necessary theoretical base.

本文针对柱壳周向壁穿裂纹，利用弹塑性有限元的数值解，在不同的约束条件下进行了较为详细的分析，获得了一些带有规律性的结果，为Dugdale模型等一些弹塑性断裂参数计算方法的应用提供了必要的理论基础。

The experiment proved that ECH can crosslinked with-NH〓 in low temperature and with-OH under higher than 40℃.

研究结果表明，在低温下只有壳聚糖的氨基参与交联反应；当反应温度高于40℃时，羟基才发生反应。

Was founded in 2003, is a company specializing in the sale of lubricants and lubrication technology services company, the company has its main Esso, Mobil, Shell, the Kunlun Mountains, the Grand Mercure brands.

无锡市苏成润滑油有限公司成立于2003年，是一家专业的润滑油销售和润滑技术服务公司，公司旗下主要有埃索，美孚，壳牌，昆仑，金爵等品牌。

Finally, we establish the exponential decay rates for Naghdi's model under some checkable geometric conditions on the middle surface.

算例的计算结果与文献中给出的实验值吻合较好，并表明壳体的剪切效应在一些情形下会对环肋圆柱壳的稳定性产生一定的影响。

In the zoology lab, saw such a spider, thought it's just a exuviation

在动物实验室，还见到了这个大的一只蜘蛛，虽然只是个蜕下的壳。。。

In 1956, Meiklejohn and Bean observed that field cooled, partially oxidized, Co particles exhibited hysteresis loops displaced along the magnetic field axis.They attributed this phenomenon to the exchange interaction at the interface between the ferromagnetic Co core and the antiferromagnetic CoO shell.

Meiklejohnc 和 Bean 在 1956 年从成长良好的单晶钴与其表面氧化层的微小颗粒，在强磁场下冷却，观察到磁滞曲线不以磁场零点对称，他们将此现象归因於在内部的 Co核与外部的 CoO 壳之界面产生交互影响。

The peeled,headed and whole shrimps as well as the fish cake of 50 mm×(7~9) mm and 50 mm×(14~18)mm were dried in a heat pump dryer at(-2~0)℃ and 20℃.

利用热泵干燥机，分别在-2~0℃和20℃两种温度下对北极虾整虾、去头北极虾、去壳北极虾和尺寸分别为50 mm×(7~9)mm和50 mm×(14~18)mm的鱼块进行了干燥研究。

with the hydroisomerization dewaxing process of shell company, apiⅱgroup and apiⅲgroup lube base oils were produced by taking vgo no.4 and dao from xinjiang karamay paraffin crude oil as raw materials after a series of lab tests and commercial trial production. the developed oils can meet the quality requirements of hviwh300 and vhvih90bs respectively. but all the haze points of the two products are about 16 ℃, and the floccus will appear in these oils with the time going by. the problem of haze point in high viscosity lube oil will still need to study continually.

采用壳牌公司以异构脱蜡催化剂为核心的全加氢工艺，对新疆克拉玛依石蜡基原油减四馏分油、轻脱油进行了实验室工艺研究，并经工业试生产，可以生产出apiⅱ、ⅲ类润滑油基础油，其主要产品性质可以分别满足中国石油hviwh300、vhvih90bs的质量要求，但这两种大粘度产品浊点达到16 ℃左右，室温下长期存储会出现絮状物，需要进一步研究解决。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。