查询词典 elliptical

A stringed instrument used in American folk music; an elliptical body and a fretted fingerboard and three strings .

美国的民间音乐用的弦乐器；带有椭圆形的身体和附有弦马的键盘和三根弦。

With aid of techniques of analytical continuation and conformal mapping, exact solutions are obtained for three typical problems concerning Eshelby's inclusion. The three problems are1 interaction between an arbitrarily shaped Eshelby inclusion and a circular inhomogeneity in transversely isotropic piezoelectric medium; 2 interaction between an arbitraily shaped Eshelby inclusion and an interface in anisotropic piezoelectric medium, the interface in our investigation may be a perfect interface, or a frictionless slipping interface , or a compliant electrode layer is embedded along the full interface of the bimaterials; 3 interaction between an arbitraily shaped Eshelby inclusion and an elliptical hole in anisotropic piezoelectric medium.

通过采用解析延拓和共形映射技术，获得了压电复合材料中有关Eshelby夹杂三个典型问题的精确弹性解答，即横观各向同性压电介质中任意形状的Eshelby夹杂与圆柱异相夹杂间相互作用；一般各向异性压电介质中任意形状的Eshelby夹杂与双压电材料所形成界面的相互作用，我们所考虑的界面包括理想界面、滑动界面以及柔性金属电极层增强界面；一般各向异性压电介质中任意形状的Eshelby夹杂与椭圆孔洞的相互作用。

In chapter 3, the orbital angular momentum of complex astigmatic elliptical beams is investigated.

第三章研究了复杂像散椭圆光束的轨道角动量。

An annular eclipse occurs instead of a total eclipse when the Moon is on the far part of its elliptical orbit around the Earth.

而发生日环食而不是日全食的是因为月亮运行到距离地球较远的轨道上，于是月亮的本影只能遮到太阳的中心。

Beautiful Chan Shengzhi supports, calyx 5, baby blue, if form is petaline, grow 8 – 12 millimeter, form of elliptical shape egg, base the ministry changes gradually narrow into claw; 2 lips form, labrum is more smallish than labium, its tip gradually narrow thread form, labium 2 crack greatly, mid broaden, tip and mid shape having tumor is protuberant; Stamen is most, blunt or antheral office department is small gradually pointed; Carpel normally 5, base the ministry is accrete into one answer ovarian.??

花单生枝顶，花萼5个，淡蓝色，形如花瓣，长8–12毫米，椭圆状卵形，基部逐渐变窄成爪；二唇形，上唇比下唇短小，其先端逐渐窄成线形，下唇2深裂，中部变宽，先端和中部有瘤状突起；雄蕊多数，花药处部钝或微渐尖；心皮通常5，基部合生成一复子房。？？

In order to fit the terrain condition, this dissertation uses Mathieu function and modified Mathieu function during the process of wave function expansion, also tries two different methods in small elliptical hill and high elliptical hill to overcome the barrier of composite boundary condition.

展开时为了克服混合边界条件带来的影响，在扁平椭圆地形和高陡椭圆地形中分别尝试了现有的两种方法并分析了其中存在的题目。

Using staircase concatenation method SCM,the optimum coupling conditions were achieved for wedge-shaped fiber wedge angle,cylindrical endface lens curvature radius,semimajor axis of planar lightwave circuit elliptical field,aspect ratio of planar lightwave circuit elliptical field,misalignment tole.

在多量子阱-平面光波光路前置模斑转换器和不加模斑转换器的情况下，用阶梯串联法数值模拟并优化设计了楔形光纤-平面光波光路间最佳耦合参量：楔形光纤楔角45°、端面圆柱透镜曲率半径2。

Most respondents believe that spherical shade, column or cone lamp stand and elliptical lamp socket are better pattern elements matching the encouragement image. The highest mean of the matched pattern combination is "spherical x column x elliptical shape".

多数受测者认为具「鼓舞」造形意象的形态元素组合为，灯罩为圆球、灯柱为长柱状或是椎柱状、灯座为扁圆状较佳，其符合形态组合平均数最高为〝球状x长柱状x扁原状〞。

Based on moving least squares surface, the differential properties of each sample point on PSO are first evaluated. In terms of covariance analysis, the elliptical splat of sample point is then determined on its tangent plane. Finally, the splats are rendered from far to near by using elliptical weighted average filtering. According to the differential properties, moreover, the suggestive contours of PSG are attained so that non-photorealistic rendering of PSG is realized.

首先根据构造的移动最小二乘曲面计算采样点的表面几何属性，然后根据协方差分析确定点元在其切平面上的椭圆表示，最后采用椭圆加权平均滤波从远到近单遍绘制各点元，此外，根据表面几何属性确定点模型的轮廓线，实现了点模型的非真实感绘制。

The VCL method and the displacement method are used to calculate the Stress Intensity Factors of semi-elliptical surface crack at the root of pipe screws, on the basis of which a simplified calculating model for screws contact is put forward so as to analyse the fracture intensity for oil drill pipe screw coupling. For the semi-elliptical surface crack with different shape and deep ratio at the root of female and male screws and the corner of male flange, the SIF has been studied systemically under inter-pressure, tension, bend and torsion loads and the approximate formulas encluding the structure parameters of oil drill pipe screw coupling, deep ratio and the shape parameters of surface crack are developed.

对工程实际中的多种石油钻杆接头螺纹连接件，就公螺纹齿根、母螺纹齿根、公螺纹台阶转角处存在的不同形状、不同厚度比的半椭圆表面裂纹，在拉伸、内压、弯曲、扭转多种载荷作用下的应力强度因子作了系统研究，在大量有限元计算基础上，建立了包含接头结构参数、裂纹形状、厚度比在内的近似计算公式。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。