Concrete walls are reinforced with steel, for instance, and a few buildings even rest on elaborate shock absorbers.
例如，除了使用钢钢筋加固混凝土墙壁之外，还将大厦安置在减震器之上。
The point blast induced spherical wave is the especial instance of the ellipsoid shock wave.
点源球面结构冲击波是旋转椭球面冲击波的特殊情况。
The point blast induced spherical wave is the especial instance of the ellipsoid shock wave.
点源球面结构冲击波是旋转椭球面冲击波的特殊情况。
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