Principles and methods for measuring dynamic behavior of rock under shock loading and unloading by shock reverberation technique are described briefly.

本文简述了用反射体法研究受冲击加载和卸载时岩石力学性质的力学原理和试验方法。

youdao

Energy dissipation is a new kind of antiseismic technology. Structural shock absorption by viscous dampers is one of the most effective energy dissipation methods.

利用粘滞阻尼器对工程结构进行减震是耗能减震方法中最有效的新型抗震技术之一。

youdao

The construction principle, mechanical properties, basic shock parameters and adjustment methods of cam-type drop-test shock machine are described.

阐述了凸轮式多次跌落冲击台的结构原理、力学性质、冲击参数及其调整方法。

youdao

The methods for shock-testing portfolios vary from simple to complex.

FORBES: Prep Your Portfolio for Disaster With a Stress Test

None of them were secure and all could be easily opened by a variety of simple techniques including the use of paper clips, straws, brass strips of metal, vibration, shock, coat hangers, and other methods that could easily be figured out by kids.

FORBES: What's Missing In The Gun Control Debate Is Talk About Gun Safety At Home