The results show that the loss of mechanical energy, the loss angle and the accumulation of the large elastic strain energy can be used to evaluate covering properties of carpets.
结果表明，机械能量损耗、损耗角及累积最大弹性应变等指标能评定地毯的铺地性能。
2
Core spun yarn is produced by covering an elastic, rigid or semi-rigid filament with a natural, artificial or synthetic textile fibre.
在弹性、刚性或半刚性纤丝上覆盖一层天然、人工或合成纤维，就可以生产出包芯纱。
3
On the front side of the main compartment is sewn a nylon pocket with an elastic top edge, covering roughly the bottom half of the compartment, presumably for the hydration system.