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- Then the regulation of translational symmetry to the phonon energy band structure of phononic crystal, as well as how to change phonon translational symmetry of the crystal artificially were analyzed. 然后分析了平移对称性在声子晶体能带结构调节中的影响,以及如何通过人工调节改变声子晶体的平移对称性。
- This paper investigates the influence of scatterer's tropism on band gaps of 3D phononic crystal. 摘要研究了散射体的取向对二组元三维声子晶体带结构的影响。
- The band gaps of the two-dimensional phononic crystal composed of square array of cylinders in air are analyzed by the plane-wave expansion (PWE) method. 采用平面波展开法,分析了一类声阻抗较大的圆柱体正方形周期排列在空气中形成的二维声子晶体声波禁带。
- An ionic type phononic crystal(ITPC) composed of two piezoelectric media aligned periodically in a superlattice structure was studied theoretically and experimentally. 提出了离子型声子晶体的概念,发展了相应的理论;
- We prepared a 2D steel/air system phononic crystal model based on the Bragg reflection mechanism. The crystal lattice constant has the same size as the sound wavelength,and the struc-ture can be modulated in two directions. 基于布拉格反射机理,自行制备了晶格常数同声波波长同数量级的二维钢/空气体系声子晶体结构模型,该模型具有双向可调性。
- This set of crystal wine cups is very expensive. 这套水晶玻璃酒杯非常昂贵。
- I lost my crystal necklace at the party. 我在晚会上丢失了水晶项链。
- She made her meaning crystal clear. 她把她的意思解释得清清楚楚。
- He drank from a crystal wine glass. 他用水晶酒杯喝酒。
- Moreover, the effect of the transverse wave on the band gaps by changing the phononic crystals diameter. 并通过仿真不同直径的声子晶体研究了横波对带隙的影响。
- The house stood by a crystal stream. 那所房子坐落在清澈的小溪旁边。
- The methods employed in studying the wave motion in phononic crystals are based on the plane-wave expansion method and supercell technique. 本研究以平面波展开法分析二维声子晶体其彻体波与表面声波的波传行为及频沟现象，并针对不同效应在调变声波频沟上作进一步的探讨。
- two-dimensions phononic crystal plate 二维声子晶体板
- The plane wave expansion method is introduced to calculate the band gap for two-dimensional solid phononic crystals with square lattices. 介绍了用平面波展开法计算二维正方点阵的固态声子晶体带隙的方法,研究不同截面形状的散射物对晶体带隙的影响。
- He wants to make it crystal clear that he do not agree with us. 他想表明清楚他不同意我们的意见。
- Thanks for the explanation; it's all now clear as crystal. 谢谢你的解释，现在完全清楚了。
- phonon crystal 声子晶体
- A fine, sharp projection, as a spine of a sea urchin or a crystal. 针状物精细尖锐的突出物，如海胆的脊椎骨或水晶球
- He wants to make it crystal clear that he doesn't agree with us. 他想表明清楚他不同意我们的意见。
- A toddler who was a menace in a shop full of crystal. 对放满水晶制品的商店构成威胁的蹒跚学步的孩子
