By simulating analysis, the optimal parameters, Numbers and type of construction machinery can be obtained, and the smallest cost and shortest period of construction projects can be predicted.

通过仿真分析，可以对施工机械的机型、数量以及作业参数作出最佳选择，并且预测出施工的最短工期和最低施工费用。

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Above all, the article introduces the type of pipelines and means of construction, and then presents some new characters of pipeline works today by one example.

本文首先对管网工程涉及的管线类型、施工方法进行了介绍，然后通过对一工程实例的介绍来论述当今管线勘察工程所具有的新特征。

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The idea of using cables to support bridge spans is by no means new, and a number of examples of this type of construction were recorded a long time ago.

用拉索支撑桥跨这一方法一点也不新鲜，很早以前就有建造这种桥的实例。

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