What coil do not occur now in our everyday life and tape, and fishing, typewriter and film projector and all have one awkward feature: they are wound — tends to unwind. For all of them a simple and reliable latch will serve kolejno of underwear elastic: soft and wide, it does not give content to unwind the coil.
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An example of a creative approach to the creation of modern sports self-similar techniques can be aircar class AC-2 motor with a working volume of 2.5 cm3. Extremely simple, but thought...
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If to speak about laws of development of the escort forces of the main sea powers in 1940-ies, the first thing that catches the eye of ever-increasing size of ships. This trend continued...
