你看看吧,我觉得没什么大的问题了但愿可以帮到你SummaryOverview in the near future fiber-optic fiber optic cable and correspondence electric cable's development characteristics in manufacturing, construction and maintenance technique, analyzed its development trend, and our country the development of the fiber-optic fiber optic cable and correspondence electric cable technique and industry pose some problems that are worth The keyword fiber-optic fiber optic cable correspondence electric cable itu-t suggests a technique to developStill have 1Summary:The composing principle of this text introduction data correspondence and commutation method and it applies scope;The classification that the data corresponds by letter, and prospect fine the applied foreground in the The main epigraph data corresponds by letterConstitute principleApply scopeApplied foreground
summarized the near future fiber optic cable and the communications cable in the manufacture, the construction and the maintenance technology development characteristic, has analyzed its trend of development, and proposed on our country fiber optic cable and the communications cable technology and the industrial development some are worth the question which key word fiber optic cable communications cable itu-t suggestion technological abstract: This article introduces the data communication the constitution principle, the switching scheme and the applicable scope; Data communication classification, and look forward to the future happy application keyword data communication constitution principle applicable scope application prospect