拱桥维修、加固方案的选择和设计，对加固工程的质量和经济性有很大影响。

The choice and design about arch bridge servicing and reinforcing scheme has much effect on reinforcing projects' quality.

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既有结构的可靠性评估、维修改造与加固已引起人们的普遍重视，成为工程结构领域的重要研究方向。

The reliability assessment, repairing, improving and strengthening for the existing structures have aroused public attention, and become an important research topic of engineering structure field.

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典型的机械工程师的职位机会包括：制造、安全、运营、维修、可靠性分析，设计等。

Typical assignments for mechanical engineers on the program may include manufacturing, safety, operations, maintenance, reliability, and design roles.

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