观看教练准备日常教程的表演也是一种激励，他们会用头撞断铁棒，并投掷大头针击破玻璃。
For inspiration, watch the coaches prepare for daily tourist performances, in which they snap iron bars with their heads and break glass by throwing a pin at it.
分析了玻璃纤维增强塑料的冲击破坏、剪切破坏机理和应力特征。
Impact failure, the mechanics shear failure and stress feature of the glass-fiber reinforced thermoplastics are analyzed.
分析了玻璃纤维增强塑料的冲击破坏、剪切破坏机理和应力特征。
Impact failure, the mechanics shear failure and stress feature of the glass-fiber reinforced thermoplastics are analyzed.
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