The growth of the railroads let to the abolition of local times, determined by when the sun reached the observer's meridian and differing form city to city, and to the establishment of regional times.
The growth of the railroads let to the abolition of local times, determined by when the sun reached the observer's meridian and differing form city to city, and to the establishment of regional times.作者: tongxun 时间: 2002-12-1 20:20