20世纪有数以万计的发明，这些发明改变了我们的生活。下面选出1901年以来的重大发明，有些是以前的发明，但在20世纪得到了普及。不锈钢很早以前就知道，钢易生锈受腐蚀。因此，不锈钢1903年到1912年出现后就成了杰出的工业金属。空调是美国人W·卡里尔1911年发明的，以控制气 Twentieth century, tens of thousands of inventions, these inventions have changed our lives. Selected below are the major inventions since 1901, some of which were previous inventions but which gained popularity in the 20th century. It is known long ago that steel is rusty and corroded. As a result, stainless steel became an outstanding industrial metal after its appearance from 1903 to 1912. Air conditioning was invented by American W · Carril in 1911 to control the gas