Counting Type Radiation Scanner for pre - stressed concrete girder imaging is presented.

介绍一种计数式辐射扫描成像系统.

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So, it is effective to set up the reliability assessment method to the pre - stressed anchorage.

因此建立有效的 预应力 锚固体系的可靠性评估方法是十分必要的.

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The pre - stressed construction structures can improve the stress state, and make stress form more reasonable.

采用预加应力的方法可以改善构件的受力状态, 使结构受力更趋合理.

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Pre - stressed concrete sleepers that have been designed to replace the conventional wooden ones have been tested.

预应力混凝土枕木用来替代传统的木质枕木并已通过了试验.

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