Improving mechanical properties of paper and board manufactured from recycled paper is an important subject today.

改善回收纸张制造的纸张和纸板机械性能是当今的一个重要课题。

The mechanical properties of thermoplastics, while substantially lower than those of metals, can be enhanced for some applications through the addition of glass fiber reinforcement.

就本质而言，热塑性塑料的机械性能低于金属，但可以通过加入玻璃纤维强化予以增强来适应某些运用。

There are changes in mechanical properties of the fabric such as weight, thickness, stiffness, permeability, or breaking strength and elongation.

有织物机械性能的改变，诸如重量，厚度，硬度，透气，断裂强力和伸长度等性能的改变。

With gasketed connections, the material of construction of the washer is important, both for compatibility with the gases in use and for its mechanical properties.

对于衬垫接头，垫圈的结构材料对于使用的气体的相容性和垫圈的机械性能都是很重要的。

Three EPDM belongs to non crystalline rubber reinforcing agent, if not, then the mechanical properties of vulcanizates low, of no use value.

三元乙丙橡胶属于非结晶性橡胶，若不加补强剂，则硫化胶的物理机械性能低，没有使用价值。