我国长途干线发展的若干数据经济要发展，通信必须先行。通信在国民经济发展中必须排在前列。这一认识已得到多数人承认而且在近年的发展中存了体现，特别是长途光缆干线的建设从量和质两个方面大大改善了我国长途通信的状况。１９８１—１９８５年的“六五”期间，敷设国... Some data economy in the development of long-distance trunk lines in our country needs to be developed. Communication must first go ahead. Communication must be at the forefront of national economic development. This understanding has been acknowledged by most people and has been manifested in recent years. In particular, the construction of long-distance optical cable lines has greatly improved the status of China’s long-distance communications in two aspects: quantity and quality. During the “Sixth Five-Year Plan” period from 1981 to 1985, laying the country ...