3results about How to "Eliminate the problem" patented technology

The application discloses a high-purity full-water-soluble potassium sulfate fertilizer and a preparation method thereof, and belongs to the technical field of potassium sulfate fertilizers. The high-purity full-water-soluble potassium sulfate fertilizer is composed of the following components in parts by weight: 960-980 parts of industrial-grade potassium sulfate, 10-20 parts of urea phosphate, 5-15 parts of potassium nitrate, 1-3 parts of sodium hexametaphosphate, 0.5-1.5 parts of sodium cocoyl glutamate and 1-5 parts of citric acid-polyethylene glycol modified polyaspartic acid. The problems of slow dissolution and false saturation of traditional potassium sulfate fertilizers in low-temperature cold water are effectively eliminated.

The application discloses a cavity electromagnetic field homogenization method for wireless energy transmission. The application uses an internal multi-port method to calculate electromagnetic field distribution in a metasurface resonant cavity under certain port configuration, and then finds a suitable port connection mode through a genetic algorithm, so that the electromagnetic field in the cavity is approximately uniformly distributed. The application realizes uniform distribution of electromagnetic field in the resonant cavity, and can realize efficient transmission everywhere in the cavity.

The utility model relates to the technical field of tension and compression testing machines, and discloses a servo tension and compression testing device, which comprises a bracket; the execution unit is fixedly arranged on the bracket; the tension and compression sensor is installed on an output shaft of the execution unit and used for extruding / stretching a tested workpiece, and the tested workpiece is fixedly arranged on the lower portion of the support; the deformation detection structures are respectively arranged on the tension and compression sensor and the bracket, and are used for detecting the axial deformation of the tension and compression sensor and the bracket in the axial direction when the tension and compression testing device stretches / extrudes the workpiece; through the arrangement of the deformation detection structure, the micro deformation generated by the tension and compression sensor and the bracket is detected by utilizing the displacement generated by the sliding block along the grating ruler, so that the problems caused by the deformation in the tension and compression test are eliminated, and the accuracy of the test device is improved.