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- sound wave expansion device 声波均整器
- A device for projecting sound waves, as in a loudspeaker. 角状扩音器一种用来产生声波的装置，如扬声器
- Where there is a sound,there is sound wave. 哪里有声音，哪里就有声波。
- Where there is a sound, there is sound wave. 哪里有声音，哪里就有声波。
- Sound waves are measured by their amplitude. 声波是根据其振幅来测量的。
- A device for projecting sound waves,as in a loudspeaker. 角状扩音器一种用来产生声波的装置，如扬声器
- Expenses for repairing and maintenance were reduced after the low frequency sound wave deashing device was used. 经采用低频声波清灰装置,减少了检修和维护的费用。
- The joyous sound wave drifted through the golden evening mist. 欢愉的音波，在金色的暮霭中游泳。
- A device for projecting sound waves, as in a loudspeaker . 等她把设计办法想出来时，大喇叭己经把她的办法向全厂广播了。
- The band gap structure of 1-D electromagnetic crystals was calculated by plane wave expansion(PWE) method in this paper. 用平面波展开(PWE)法计算了一维电磁晶体的带隙结构。
- 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。
- The relative band gap for a rhombus lattice photonic crystal is studied by plane wave expansion method and high frequency structure simulator (HFSS) simulation. 采用平面波展开法结合HFSS软件研究了菱形晶格光子晶体的相对带隙特性。
- The improved experiment device of interference of sound wave can feel the interference countervail and strengthening of sound in ordinary lab, and measure the sound velocity. 摘要本文给出了改进声波干涉实验装置的具体方案，该改进装置可在普通实验室内感受声音的干涉相消和干涉加强现象，并能测定声速和频率。
- The whale looks for food using sound waves. 鲸鱼通过声波寻找食物。
- The acoustic band gap structure for cuboid array system made of water ellipsoids surrounded by a mercury host is investigated by the plane wave expansion method. 摘要弹性波在声子晶体中传播时，会产生一定的频率禁带，声和振动在禁带中被禁止传播。
- The plane wave expansion method (PWM) and rapid genetic algorithm (RGA) are used to design two-dimensional photonic crystals with large complete band-gaps. 摘要采用平面波展开法和快速遗传算法优化设计具有大禁带的二维光子晶体。
- Short sound waves bounce off even small objects. 短声波即使遇到小物体都会产生回音。
- Here the plane wave expansion method is adopted for calculating the band structure at each iteration.Then the photonic crystal can be optimized after iterations. 在迭代的过程中，我们采用平面波展开法计算光子晶体之能带，经多次迭代计算后即可合成最佳化之光子晶体。
- Sound waves impinge on the eardrum. 声波撞击着耳膜。
- They were studying the reflection of sound waves. 他们在研究声波的反射。
