十九世纪七十年代到二十世纪初，被公认为近代历史上第二次工业革命，由此世界从“蒸汽时代”进入“电气时代”。在这期间，由于电力作为新能源进入生产领域，使得科学技术快速进步，工业生产高涨。而随着越来越多的...
In the 1870 s to the early twentieth century, is widely regarded as the second industrial revolution in the history of modern, the world from the era of "steam" into "the age of electricity. During this time, due to power as a new energy into the field of production, make rapid progress in science and technology, industrial production. But as more and more...
