The utility model relates to a lens used for improving the diffraction efficiency of a blue-ray disc and a China high definition disc, which comprises a first lens surface (1) and a second lens surface (2), wherein the first lens surface is a free curved surface, and the second lens surface is an as.....
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For measuring strain in one direction within the plane of the fabric strain sensor (10), said sensor (10) comprising: a substrate coated on the elastic fabric (30) on the conductive particles or fibers and a mixture of the elastomer matrix (20).
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The invention relates to a feature weighing computation method based on a structural constraint in a Chinese information retrieval. The method comprises the following steps: a. carrying out structuring processing to inquiry and obtaining a structuring inquiry result, wherein the structuring processi.....
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A system for analyzing the surface appearance of fabric is composed of a feeding mechanism for carrying a fabric to pass through a space, an image acquiring device to take multiple profiles of said fabric, and a computer, which can process the acquired images to obtain 3D data about the fabric surfa.....
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The invention relates to an RFID (Radio Frequency Identification Device) electronic seal based container management system and method. The management system comprises an RFID electronic seal, sensing equipment and a control device, wherein the control device is used for giving a sealing or opening c.....
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