The principle of optical fiber communication is: at the transmitting end, the transmitted information (such as voice) should first be converted into an electrical signal, and then modulated onto the laser beam sent by the laser, so that the intensity of light changes with the amplitude (frequency) o......
Read MoreA PA hose is a flexible tube used to transport compressed air from one point to another in a pneumatic (air-powered) system. These hoses are commonly used in various industrial applications, workshops, construction sites, and other settings where compressed air is utilized.
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