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中国古代的四大发明几乎尽人皆知。其实,中国古代创造发明很多,炎黄子孙应当记住祖先成就,努力开创灿烂的未来。1中国机械的发展过程简述中国机械的发展过程十分有益。1.1远古机械这个时期大约是从百万年前到4千多年前。这个时期主要用石器工具,但从广议上讲,工具也叫做机械,它也就是考古学上的石器时代。约在1万年之前是旧石器时代,在此阶段工具进步很慢。工具有一物多用的性质,因而种类很少,只有砍砸器、刮削器、尖状器及石球等几种。然后,进入了新石器时代,工具进步加快,种类渐多,约有6类30几种,能从事耕作,狩猎,捕渔,建筑,械斗及纺织等工作。当时工具的精品是石刃、骨刀、小口大腹尖底罐,堪称当时工具
Four ancient Chinese inventions are almost universally known. In fact, many inventions were invented in ancient China. The progenitors of the Chinese people should remember the achievements of their ancestors and work hard to create a splendid future. A brief history of the development of China’s machinery China’s machinery development process is very useful. 1.1 ancient machinery This period is from about a million years ago to 4 thousand years ago. The main use of stone tools during this period, but from the broad terms, the tool is also called machinery, it is also the archeology of the Stone Age. Paleolithic about 10,000 years ago, at this stage the tools have been slow to progress. Tools have a multi-purpose nature, and therefore very few species, only choppers, scrapers, pointed devices and stone ball several. Then, after entering the Neolithic period, the tools have been progressing rapidly with more and more types. There are about 30 types in 6 categories, which can engage in farming, hunting, fishing, construction, fighting and textile work. At the time the tools of the boutique is the stone edge, bone knife, small mouth big tipped cans, called the tool at the time