Numerical study on hypersonic boundary layer transition over a sharp cone;
针对尖锥模型,在马赫数6、攻角0°～2°时,采用第二模态(Second-mode)机制,预测并比较完全层流态、完全湍流态,以及自然转捩发展过程中的表面热流、表面摩阻等气动特性。
The results indicate that the tip of this geometry can not only produce focusing spot at nanometer scale but also engender enormous field enhancement under the excitation of plane wave from the base of pyramidal tip.
利用(FD)2TD方法对全镀金属膜四面锥尖端近场的光增强分布进行了数值模拟,结果表明在平行光束从全镀金属膜四面锥底面入射条件下,尖端近场可以获得纳米尺度的聚焦光斑,并且光场可以得到较大的增强。
In order to understand the application of opposite vertical pyramidal tips in single molecule damnification and measuring system,enhancement of opposite vertical pyramidal tips was analyzed and computed.
为了探索对顶四面锥尖在分子损伤和检测中的应用,利用处理色散介质的时域有限差分法((FD)2TD)计算和分析了对顶四面锥尖之间的光增强,研究了不同锥体长度和激励光波长对光增强的影响。
Based on the geometrical relation between tappets and cams,uniform formulas for mutual lift-range transition between flat based tappet,roller(or sphere)tappet and cone tappet were presented.
通过分析不同从动件与凸轮的几何关系,推导出一组平底挺杆、滚子或球面挺杆、尖锥挺杆升程的相互转换通用公式。
In this paper we prove that if the polar cone Λ* of a closed convex cone Λis sharp or is generated by a closed ball not containing θ, then Λ is solid.
本文证明：当锥Λ的极锥是尖锥或由不含θ点的闭球体张成时，Λ是体锥；
A Numerical Study of the Evolution of 2-D Disturbance in Supersonic Sharp Cone Boundary Layer with Zero Angle of Attrack;
零攻角尖锥边界层中二维扰动演化特征的数值研究
Experimental Investigations of Hypersonic Boundary Layer Transition on a Sharp Cone Based on the Method of Wavelet Analysis;
基于小波分析方法的高超音速尖锥边界层转捩的实验研究
a tall tapering spire.
高高的圆锥形的尖顶。
All three seemed sharp and conical in figure.
这三座山都呈尖尖的圆锥形。
a spiked helmet worn by German soldiers.
德国士兵戴的一种有锥形尖顶的头盔。
A cone is a solid body which narrows to a point from a round, flat base
圆锥体是底面圆平顶尖的实体
A cone is a solid body which narrow to a point from a round, flat base.
圆锥体是底面圆平顶尖的实体。
Evaluation of the Shrinkage by Heat of 0.06-taperd Gutter-perchas;
0.06锥度牙胶尖的热收缩性能的评价
Numerical Simulation of Light Intensity Enhancement at Pyramidal Probe Tip;
四面锥探针尖光增强的数值模拟研究
A congenital abnormality of the skull in which the top of the head assumes a conical or pointed shape.
尖头畸形头颅的一种先天性畸形，头的顶部形成锥形或尖形
Effects of different tapered gutta-percha cones with cold lateral condensation technique on apical seal
不同锥度牙胶尖冷侧方加压对根尖封闭性能的影响
"gabled dormers added to spire faces, and steep pinnacles (vertical ornaments of pyramidal or conical shape) added to tower corners."
在塔尖顶的面上加入三角形的屋顶窗;和加在塔边的陡直的小尖顶(角锥形或圆锥形竖向装饰)。
a conical child's toy tapering to a steel-shod point on which it can be made to spin.
一种圆锥形的儿童玩具，尖上裹着一层钢铁，它可以圆锥尖为基点进行旋转。
a fungus having an acutely conic cap and dry stalks.
一种有尖的圆锥形的帽和干的茎干的菌类。
The application of Cone Beam Computed Tomography in periapical images of anterior teeth
锥形束CT在前牙根尖周影病损像判别中的应用
Root Fillings Quality of Different Tapered Gutta-percha Cones Combined with GuttaFlow-an in Vitro Study
GuttaFlow结合不同锥度牙胶尖充填质量的体外评价
3D Modeling and Optimization Analysis of Blades and Taper-spiral Auger’s Tip
刀片及圆锥螺旋钻尖的三维建模和优化分析