@ystemworактивность: 8 месяцев, 3 недели назад
What are O Rings? You could argue that the o-ring is a bit of a «living fossil» in terms of manufacturing components. They were first brought to market way back at the dawn of the 20th century — and yet, for all their absolute simplicity and the very basic nature of the role they perform, they’re still incredibly widely used […] Просмотр
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