Test objectives: use specific block impact on the mattress over and over again, to assess their impact, and the durability of solid retentivity.

用特定的加载块反复对床垫进行冲击，评估其耐用性，和弹簧的坚牢保持度。

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These efforts complement the sophisticated technical systems we continue to develop to limit the impact of these attacks, and where possible, block them altogether.

这些努力是对我们先进的技术系统的补充。我们将继续进行技术研发，以限制这些攻击的影响，并在可能情况下完全阻止它们。

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In this paer, by the use of the method of characteristic line of stress wave, a prediction analysis for the sacond impact of an elastic bar impacting on a rigid block is given.

本文采用应力波特征线方法详细分析了刚体撞块撞击固支的弹性长杆的撞击过程。

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For now, coast dwellers are able to use the public's not entirely rational fear of fireballs and environmental impact to block plans for LNG terminals.

FORBES: Magazine Article

Lawyers for a group seeking to block the scheme claimed the impact on farming businesses was inadequately considered.

BBC: A5 scheme 'not properly assessed', court told

However, the ministry said that it will be supervising the search and exploration at the block and will monitor the impact on the environment.

BBC: China firms to invest $2bn exploring shale gas reserves