求翻译：【摘要】：在铁路、公路交通枢纽的改建、改造中及新建工程的临时性跨基坑交通需求条件下,临时便桥的建设是一种快捷、经济、安全可靠的交通保障措施。本文就宁波铁路枢纽工程临时铁路便桥施工过程中，通过对相关技术难点进行处理，有效地解决了问题，保证了临时铁路便桥的安全生产及运营，节省了投资，并对今后的站改工程具有一定的借鉴意义,在工程实践中可推广应用。是什么意思？

Abstract: In the conditions of the railway and highway transportation hub, alteration, reconstruction and new construction of temporary cross-pit traffic demand, the construction of the temporary temporary bridge is a quick, economic, safe and reliable transportation security measures. Ningbo Railwa

[Summary] in railways, road transport hub in the transformation of the conversion, and new construction of the temporary traffic demand across pit, under the conditions of the temporary bridge building is a fast, economical, safe and reliable transportation security measures. This article, the Ningb

"Abstract": in railway and highway transportation hub in alterations, renovation and new construction of temporary cross-Foundation pit under the condition of traffic demand, detour bridge construction is a fast, economical, safe and reliable transport of safeguards. This temporary railway in tempor