44results about How to "Improve launch stability" patented technology

The invention provides a carbon nanotube cold cathode, a preparation method thereof and an X-ray tube, and the preparation method of the carbon nanotube cold cathode comprises the following steps: carrying out ball milling on an agglomerated carbon nanotube to obtain carbon nanotube powder; mixing the carbon nanotube powder with a first solvent and an electrolyte solution, and performing ultrasonic oscillation to obtain a suspension; a metal substrate is placed in the suspension liquid for electrophoretic deposition, and the carbon nano tube thin film cold cathode is obtained; coating a curing agent on the carbon nano tube thin film cold cathode for cross-linking curing to obtain a cured carbon nano tube cold cathode; and enabling the carbon nano tube in the carbon nano tube cold cathode in the curing state to form a tip by utilizing a high-energy ion beam, and enabling the carbon nano tube to form an upright state by utilizing a high-strength electric field to obtain the carbon nano tube cold cathode in an activated state.

The application discloses a kind of equal-pressure injection type planting seed launching method based on constant pressure air source, bullet-shaped structure's projectile is made by mixing plant seed and nutrient medium and is launched into bank slope soil body using air pressure, and its characterized in that, a stable pressure air source is used to supply gas for launching chamber, and the interval type continuous ejection of seed projectile is realized by the continuous on-off cycle control of gas supply;And be realized by a kind of river bank slope seed planting ship with constant pressure air source device.The application can complete the planting and greening of river bank slope by launching the projectile containing plant seed, has the advantages of better seed launching stability, more easily controlled launching rate, longer service life, can overcome the limitation of river bank steep slope, complete revetment plant seed planting, reduce the risk of manual operation, better realize river bank slope greening.