This paper discuses the problem of application of the longitudinal waves to layered dielectric waveguides.
讨论在分层介质波导中采用纵波的问题。
How to analysis and overcome the impact of heat exchanger fouling is a key problem of application of sewage.
如何把握与克服污水换热设备的污垢对系统流动换热的影响是应用的重点难题。
The paper introduces the study of technology of face recognition and describes three difficult problem of application.
论文首先介绍了人脸识别技术的研究内容以及现状,指出了影响人脸识别技术应用的三大难题。
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