60results about How to "Achieve engineering" patented technology

The invention is applicable to technical fields such as terahertz security inspection, material detection, remote sensing, and medical diagnosis, and provides a radiometer front-end structure and terminal equipment. The structure includes: a metal box body with a groove on the upper side, and the groove A plurality of bosses are arranged inside, and the bosses are used to position the chip; the two-stage low-noise amplifier chip and the detector chip are arranged on the corresponding bosses in turn; the quartz probe is arranged in the groove of the metal box Inside and on the left side of the boss corresponding to the two-stage low-noise amplifier chip, it is used to receive the signal radiated by the object; the video amplifier is set in the groove of the metal box and is located on the boss corresponding to the detector chip The right side of the table; the electrical connection between adjacent devices can significantly reduce the volume of each circuit, has a high degree of integration, can realize automatic assembly, reduce the difficulty of assembly, and can realize engineering and mass production.

The invention discloses a soft abrasive particle flow constraint runner device, which comprises a base and a cover plate, wherein the base is provided with a workpiece sinking tank; the top of a processing runner is provided with a sealed sinking tank; a sealing gasket matched with the sealed sinking tank is arranged inside the sealed sinking tank; a constraint module and a clamp for fixing the constraint module are arranged inside the processing runner; abrasive particle fluid impacts a workpiece to be processed through the constraint module, and a through hole is formed on the constraint module; the cover plate is connected with the base through a bolt, and a lug boss is formed at the bottom of the cover plate; a plurality of runner holes which allow abrasive particle-free fluid to flowinto the processing runner are formed on the base, wherein one runner hole is connected with a pipeline interface which allows fluid in the processing runner to flow out so as to form a drainage port, and the rest runner holes are connected with a one-way valve which prevents the fluid which is being processed from returning; and an abrasive particle flow inlet which allows fluid mixed with abrasive particles to enter the processing runner is formed on the cover plate, and the abrasive particle flow inlet is connected with the one-way valve. The device has the advantages of having good processing effect and high processing efficiency and avoiding non-uniform processing effect.

The invention discloses a polypropylene (PP) alloy material with low molding shrinkage. The PP alloy material is prepared from the following raw materials in part by weight: 5-20 parts of SEBS (Styrene-Ethylene-Butylene-Styrene), 5-30 parts of mixture of basic magnesium sulfate whiskers and inorganic filler, 50-90 parts of PP resin and 2-10 parts of compatilizer. The invention further discloses a preparation method for the PP alloy material. Due to the adoption of the PP alloy material with low molding shrinkage provided by the invention, the molding shrinkage of the PP is effectively lowered, and the original performance of the PP is greatly improved.

The invention discloses a water supplement and algae control method for a large-scale shallow lake water bloom agglomeration water area. The method utilizes a water environment simulation technology, a soft enclosure technology and a dynamic monitoring and scheduling technology and comprises building a lake water environment analogy model, constructing soft enclosure engineering to form a desired water area, carrying out on-line monitoring on the desired water area, building a space-time high precision water environment analogy model of the desired water area, constructing a water quality neural network model and building a flow scheduling system of a water supplement river. The method is a systematic and quantitative technical system which utilizes a river flowing into lake to supply water for a large-scale shallow lake water bloom agglomeration water area so that algal density is controlled. The method builds a defined quantification relationship between supplement water amount and quality and water quality response of a desired water area so that quantitative water environment in the water resource scheduling system is realized, and the problem that the existing water diversion-based alga control engineering measures cannot form a quantitative technical solution so that alga control effects are uncertain or unconspicuous is solved.

The present invention discloses a hotspot path analysis method based on density clustering. Aiming at characterizing a target path as a set of path points composed of several path points, a similarity distance matrix is ​​constructed, and the similarity between two sets of path points is compared. Based on the similarity distance matrix, the distance threshold ε and the density threshold MinPts, density clustering is used to iteratively calculate the clusters composed of path point sets, and finally the path set mode of each cluster is output as the target hotspot path. Advantages of the present invention: (1) propose a similarity comparison method for target path point sets; (2) the selection of the density threshold MinPts has certain flexibility and robustness; (3) the calculation cost is low, and the realization method is engineering .