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Why does melt-blown cloth need static electret equipment?01 Why does melt-blown cloth need static electret equipment?Electret electrostatic adsorption is to capture coronavirus droplets through the coulomb force of charged fibers.

Selective photothermal decomposition(Selective Photothermolysis)As early as 1983, a scientific paper published by two scholars, Anderson and Parrish, proposed "selective photothermal decomposition". This is a very important concept for the development and application of laser in dermatology.

As early as 1983, a scientific paper posted by way of two scholars, Anderson and Parrish, proposed "selective photothermal decomposition". This is a very necessary thought for the improvement and software of laser in dermatology.

Ultrasonic generator common failure and maintenance methodsUltrasonic generator is a kind of equipment that converts the mains power into the corresponding high-frequency alternating current of the transducer to drive the transducer to work. It is an important component of the high-power ultrasonic system. It can also be called electronic box, ultrasonic driving power supply and ultrasonic controller. Although the ultrasonic generator can also be called the ultrasonic drive power, but in fact, the ultrasonic generator is only a part of the ultrasonic drive power.

Mode of operation of laserThe laser with different wavelength and different output mode will be absorbed by different tissues or substances after entering the skin and thus produce different action modes. These tissues or substances are called Chromophore.Photothermal action refers to the absorption of laser light into the skin by specific pigment groups and then converted into heat energy. Depending on the duration of the laser pulse and the heat dissipation time of the skin tissue, the heat may spread to the surrounding tissues and cause a wide range of heating (e.g.

A key query is how to make sure "fast enough", that is, what elements affect switching off the tube rapidly to keep away from the penalties of inductance saturation? This may also be the last determinant of the quantity and charge of the inductor, so it is vital to have a exact appreciation of the response time issue.1. All present day limiting loops require a positive time response.

The principle of laser generationLASER is written as "Light Amplification by Stimulated Emission of Radiation", which means that by the principle of "excitation emission", the amplification of light waves is generated, which is called "laser". The motion state of electrons can be divided into different energy levels. When electrons transition from high energy level to low energy level, they will release electromagnetic waves of corresponding energy (the so-called spontaneous radiation).

Laser engraving machine use precautions1. When using automatic focal length, it is necessary to pay attention to whether the automatic focal rod is fastened. If the automatic focal rod is loose, it will cause the top of the workbench to the laser.2. When laser engraving machine is working, it is forbidden to open the boot cover.3. Open the smoke exhaust and smoke blowing equipment during processing.4, processing wood, paper, must pay attention to the processing speed to avoid fire.5.

Precautions for using laser and colored light◇ In the course of optical treatment, the operator should minimize the potential risks to the person present and the possible side effects to the customer◇ During the course of treatment, unauthorized persons are forbidden to enterAll reflective materials and inflammable materials should not be placed in the treatment room, such as mirrors and reflective glass objectsCarbon dioxide extinguisher should be placed in the room◇ Beauty care center should keep the fire outlet unblockedDoors should be kept closed and Windows should be covered with light -

Optical terms for cosmetic instrumentsA photon is an elementary particle, a quantum of electromagnetic radiation. In quantum field theory, it's the force carrier that transmits the electromagnetic force.Light spots/spots are few and far betweenLight spot is the contact point of light contact skin, different instruments have different light output size and shape. Such as color light instrument contact point is generally rectangular, size marked as long x wide (for example: 10mm x 25mm). Generally, the laser output is a dot, and the size is marked as the diameter (e.g., 3mm, 8mm, etc.).