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The usage of the three wires of the plug
Three-pin plug, one of the three thin wires must have a plastic outer covering that is not a plain color (a plain color refers to one color), but must contain two colors, usually yellow and green.
Plug-Power Cord Related Standards
Types of power cords around the world
Power and plug standards around the world
There is no standard power supply voltage and frequency in the world, that is, the number of times the current direction changes per second, and it varies from place to place
The application and benefit of plant fill light
The plant lamp was developed by Nanjing Agricultural University.
Analysis of the supplementary light application of LED plant lights to photosynthesis
Analysis of the supplementary light application of LED plant lights to photosynthesis
Photosynthesis and plant growth fill light
The maintenance of life in nature is completely dependent on the supply of energy, and the sun is the source of energy
