In the late 1850s the speed of technological change quickened.19世纪50年代末期，技术变革的速度加快了。an age of technological innovation技术革新的时代With technological changes many traditional skills have become obsolete.随着技术的革新，许多传统技艺已被淘汰。...
...the transformation wrought by the technological innovations of the industrial age.由工业时代的新技术方法促成的变化Changes in the technological base of coal - fired power plants could restore their attractiveness, however.改变火力发电厂的基础技术...