中国古代四大发明──印刷术孙小美人类早期的文化传播主要是靠手抄。无论是刻金斫竹，还是书于缣帛，其携带、储藏、阅读均十分不便。汉魏以后，随着纸张的发明与日益广泛应用，官私藏书有了很大发展。但是，一个个字的抄写十分麻烦，如果是卷帙浩繁的著作，往往要抄几年... Four ancient Chinese inventions ─ ─ typography Sun Xiaomei Early human cultural spread mainly by hand copied. Whether it is engraved gold bamboo, or book in silk silk, its carrying, storage, reading are very inconvenient. After the Han and Wei dynasties, with the invention of paper and the increasingly wide range of applications, there has been a great development of official and private collections. However, the transcription of a word is very troublesome, if it is voluminous book volume, often have to copy a few years ...