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Social Shaping of Technological Trajectories of Shinkansen

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The Tokaido Shinkansen began operating in 1964 and ran at globally unprecedented speeds of more than 200 kmph. Comparison with the operating speed of aircraft necessitated further improvement of the operating speed of Shinkansen. Nevertheless. there was no improvement until 20 years. https://thegreensjunglebeautyshops.shop/product-category/scalp-brush/
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