一级地毯底布：在底布上面铺上层层纱线，最后组成簇绒地毯。
Carpet backing (primary) -the base fabric on which pile yarns are tufted an anchored to make a carpet.
一种改进的旋转过程中的高拉韧性，技术级纱线被披露。
An improved process for the spin-drawing of high-tenacity, technical-grade yarns is disclosed.
一种改进的旋转过程中的高拉韧性，技术级纱线被披露。
An improved process for the spin-drawing of high-tenacity, technical-grade yarns is disclosed.
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