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1 ημέρα πριν · High-speed rail (HSR) is a type of rail transport network utilizing trains that run significantly faster than those of traditional rail, using an integrated system of specialized rolling stock and dedicated tracks.While there is no single standard that applies worldwide, lines built to handle speeds above 250 km/h (155 mph) or upgraded lines in excess of 200 km/h (125 mph) are widely ...
1 ημέρα πριν · French decimal clock from the time of the French Revolution.The large dial shows the ten hours of the decimal day in Arabic numerals, while the small dial shows the two 12-hour periods of the standard 24-hour day in Roman numerals.. Decimal time is the representation of the time of day using units which are decimally related. This term is often used specifically to refer to the French ...
