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The circle next to the ceiling is called the light strip, and the surrounding ones are called downlights.
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You don't have a figure.
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The light strip is called diffuse reflection, and inside is a T4, T5 tube or hose strip. Outside with holes are downlights and spotlights.
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There is no picture that can not be very accurate to illustrate, if it is a gypsum board ceiling, the home should be a spotlight, and the public place is a downlight.
The most direct way to save power ,,, is to look at the wattage of the spotlight bulb, W,, and add it up to see how much. >>>More
Depending on what kind of light strip you are installing, if it is a lamp, it will consume high power, if it is an LED, it will consume very low, and if it is a small incandescent lamp bead, the power consumption will be low.
White,yellow for a long time eyes
Beautiful and generous, with high appearance, otherwise it would be too monotonous to only have white on the head.
This kind of lamp is usually called a bull's-eye lamp verbally. >>>More