eshik tizimi, 81-775, 81-776, 81-777 turidagi metropolitenda o'rnatish uchun mo'ljallangan, "Moskva 2020" loyihasi doirasida, harakat tezligi 90 km/soatgacha bo'lgan, metropolitenning faol yo'nalishlarida va ochiq yo'llarda ishlatiladigan vagonlar uchun.
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