3results about How to "Increase space distance" patented technology

The invention relates to the technical field of cement additives, in particular to a powder composition for cement addition and a preparation process of the powder composition, modified sodium lignin sulfonate serves as an important component of the powder composition, dispersity and stability of sodium lignin sulfonate are effectively improved through sulfomethylation and condensation reaction, and in cement concrete, the powder composition has the advantages that the dispersity and stability of sodium lignin sulfonate are improved; the modified sodium lignin sulfonate can be adsorbed on the surfaces of cement particles to form a protective film, friction force and resistance among the cement particles can be reduced, so that the fluidity of the concrete is improved, meanwhile, a sulfomethylation structure of the modified sodium lignin sulfonate can chemically react with calcium ions in the cement to form stable calcium salt, the stability of the concrete is further enhanced, and the service life of the concrete is prolonged. According to the powder composition for cement addition and the preparation method of the powder composition, the performance of cement concrete can be remarkably improved through well-designed components, and the composition has excellent flowability, anti-permeability, anti-freezing property, water resistance, mildew resistance and rust resistance.

The application discloses a kind of satellite transceiver's dual antenna radio frequency channel isolation circuit, comprising: circuit board, main input port, slave input port and signal processing chip;The input circuit of main input port is divided into two ways on the front of circuit board;First road passes to the back of circuit board and is divided into first subcircuit and second subcircuit;First subcircuit is connected to the back B3M frequency conversion processing circuit by first intermediate layer;Second subcircuit is connected with B1M frequency conversion processing circuit;Second input circuit passes to the back and is connected with auxiliary frequency conversion circuit;The input circuit of slave input port passes to the back and is divided into third input circuit and fourth input circuit;Third input circuit passes to the front and is connected with B3S frequency conversion processing circuit;Fourth input circuit is connected to the front B1S frequency conversion processing circuit by second intermediate layer.The present application carries out frequency conversion processing to slave input signal and main input signal respectively on the front and back of circuit board, reduces the direct coupling and radiation interference between signals.

The invention is suitable for the technical field of photoelectricity, and provides a display substrate and a preparation method thereof and a display panel, the display substrate comprises a substrate and a first circuit layer, an isolation layer and a second circuit layer which are arranged on one side of the substrate, the first circuit layer is adjacent to the second circuit layer and is not connected with the second circuit layer, the first circuit layer is provided with at least one first end, and the second circuit layer is provided with at least one second end. The second circuit layer is provided with at least one second end, and one first end and one second end are located on the same side; the isolation layer is arranged between the first end and the second end of at least one side in the direction perpendicular to the substrate and comprises a first sub-isolation layer and a second sub-isolation layer which are connected. The thickness of the first sub-isolation layer in the direction perpendicular to the substrate is larger than that of the second sub-isolation layer in the direction perpendicular to the substrate, and the first sub-isolation layer has contact surfaces with the first end and the second end respectively. According to the display substrate, the serial connection of the first circuit layer and the second circuit layer can be improved through the design of the isolation layer, and the product yield is improved.