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- Four parts are included: acoustic lens, mechanics I electronic circuitsand microcomputer system. 声显微镜由声镜、机械部件、电路和微机软硬件组成。
- It has put forward a imaging method of acoustic lens using photoacoustic signal and according to the Kirchhoff diffraction theory we deduce. 主要内容：1．光声信号声透镜层析成像方法的提出，并依基耳霍夫衍射理论推导了声透镜的脉冲响应。
- The paper focuses on the immersion line-focusing ultrasonic transducer with cylinder curved acoustic lens used in intelligent pig,establishes a mathematical model of acoustic fields,calculates its acoustic field distribution and focal length. 论文针对智能猪用柱形曲面声透镜水浸式线聚焦探头,建立了其声场模型,并对其轴线声场和焦距进行了数值模拟。
- Discussed the achromatic principle of our hybrid acoustic lens system by deducing the point spread function of a point source with a bandwidth through the different imaging system. 利用菲涅耳衍射理论推导出了单频点声源经过单声透镜后的点扩展函数、有一定带宽的点声源经过单声透镜后的点扩展函数,以及有一定带宽的点声源经过我们设计的混合声透镜后的点扩展函数。
- Acoustical lenses are used commonly for contour correction. When scanning the inside of a pipe section by the immersion method, which of the following lens types would be used? 声透镜常用来修正声束形状，用液浸法从管子内壁进行探伤时，应使用哪咱类型的透镜？
- Have your glasses got plastic lenses? 你的眼镜是用塑胶镜片的吗?
- Simulation research on acoustic lens beamforming 声透镜波束形成技术仿真研究
- One that makes lenses and eyeglasses. 光学仪器制造技师光学透镜和眼镜的制造者
- acoustic lens focused transducer 声透镜聚焦探头
- Opened the show with an acoustic set. 不用电子乐器开始演出
- One that sells lenses, eyeglasses, and other optical instruments. 眼镜商，光学仪器商出售光学仪器、眼镜或其它光学仪器的人
- STUDIES ON ACOUSTIC LENS IMAGING OF PHOTOACOUSTIC SIGNAL 光声傅里叶变换成像理论
- High-quality wide angle lenses are very expensive. 高品质的广角镜头非常昂贵。
- acoustic lenses 声透镜
- Cameras have lenses at the front. 照相机的前面装有镜头。
- Some of these telescopes have glass lenses in them. 其中一些望远镜里安装着玻璃透镜。
- These sandstone bodies form elongate lenses. 这些砂岩体形成伸长的透镜体。
- Wash the lenses in saline solution. 用盐溶液清洗镜片。
- You must have an acoustic problem. 你的听觉一定有问题。
- Rigid Contact Lenses And Myopia Progressi. 硬性隐形眼镜与近视发展。
