The large dynamic testing devices in the US are listed and the drop hammer test is introduced as an alternative test.
对部分测试内容进行了着重讨论，并列出了美国大型动力测试设备的情况。
The impact experiments of concrete filled steel tubes with fixed-ends were carried out on the drop hammer test machine.
利用落锤式冲击试验机对两端固定不同壁厚钢管混凝土构件进行了侧向冲击实验。
This paper describes drop hammer hydraulic dynamic calibration device's operating principle and its main function. The problems of the current calibration methods are also studied in details.
该文介绍了落锤液压动标装置的工作原理及其主要功能，分析了现有校准方法存在的问题。
This paper describes drop hammer hydraulic dynamic calibration device's operating principle and its main function. The problems of the current calibration methods are also studied in details.
该文介绍了落锤液压动标装置的工作原理及其主要功能，分析了现有校准方法存在的问题。
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