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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The invention relates to the technical field of wireless communication and discloses a double radio frequency scheduling method for quick switching. The method comprises: calculating and collecting measurement data of a plurality intelligent triggers according to metric values of different layers of.....
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The invention relates to the technical field of the wireless mesh networks and discloses a switching method for the wireless mesh network. The method comprises the following steps: (A) adopting a minimum dominating set algorithm to select an agent router in a plurality of mesh network routers and up.....
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The present invention relates to a method for ultrasound imaging and elasticity measurement method, comprising scanning the object B-mode ultrasound images obtained from the B-mode ultrasound image signals, select the A-type, by a selected group of ultrasonic sensor signals of the selected type A lo.....
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The present invention relates to a preparation of shape memory polyurethane shape memory fiber and its preparation method, the shape memory polyurethane is a hydroxyl group-containing organic polymer material, a chain extender, a diisocyanate, blocking agent, the molar ratio of 1: 1-3:2.4-4.8:0.8-1......
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