It is well know, in general, that the long - span bridge is the hinge of transportation system and the important component of lifeline project.
大跨度桥梁通常是交通运输系统的枢纽工程，是生命线工程的重要组成部分。
Moreover UHV transmission project as a great influence lifeline project, if be destructed would lead to huge economic losses and other secondary disasters.
而特高压输电工程作为影响力十分大的生命线工程，若遭到破坏将导致巨大的经济损失和其他次生灾害。
Campus smart card system is the basis project and the important part of campus digitization program, while security is a lifeline of the campus smart card system.
校园一卡通系统是数字化校园的基础工程，是数字化校园系统的重要组成部分，而安全性是校园一卡通系统的生命线。
Campus smart card system is the basis project and the important part of campus digitization program, while security is a lifeline of the campus smart card system.
校园一卡通系统是数字化校园的基础工程，是数字化校园系统的重要组成部分，而安全性是校园一卡通系统的生命线。
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