By importing and spontaneous research the technology of selection, transmission, broadcasting, overcastting and receiving developed in very fast speed during the five periods.

• 在这五个时期中,电视新闻的采制技术、传输技术、播出技术、覆盖技术、接收技术以及制作技术,通过引进和自发研制两种方式,都在飞速发展。