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Anodizing⚡️

It is a method of increasing the corrosion resistance of a metal product by forming an oxide layer on its surface.
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Just watch....
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The concept of a folding balcony
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Bangkok
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When the volume level gets above 155-160 dB, the car starts shaking and almost bursting with vibration. At low frequencies, the windows burst.
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Oscillation in an elastic medium

When striking the tuning fork, vibrations arise inside, they are almost invisible, only slightly audible. As soon as the horns of the tuning fork are submerged in water, a whole storm is born.
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Strasbourg, France
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Milan
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X-ray of a dog that eats
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▫️ Map of the distribution of black earth in the world

Just over half of the world's black earth is concentrated in the southern regions of Russia - a large part of a huge belt stretching from Austria and Croatia to the northern regions of China. And this potential wealth remains largely underutilized.

A second, much smaller black-soil belt is found in the northern regions of the United States and southern regions of Canada. There are some areas with black earth or soils of similar quality in South America as well
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Gdansk
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A television for families who can't decide what to watch in the evening

Thanks to special glasses, everyone can watch his/her own program. Okay, but what about the sound?
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How the door lock works
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