日韩精品一区三区,亚洲一区手机在线视频,不卡无在线一区二区三区观,久久精品免试视看国产成人,亚洲手机无码在线

Locomotive: In 1905, the Trans Siberian Railway was fully opened, and the trade route between China and Russia completely shifted from the Jin Mongolian region to the northeast. Russian merchants switched to railway transportation via Vladivostok, which was not only low-cost but also extremely convenient. The entire transportation time was only about one-fifth of the original land transportation time for horses and camels. This modification took a step forward in the development of productivity. To commemorate this meaningful event, the "locomotive" trademark design was derived from it.