研究了不同工厂的高中低支纬纱的性能。
The performance of weft yarns of coarse, medium and fine count from different mills is studied.
自动调节高中低音。
各自框架在高中低三层次具有内在的统一性，共同塑造不同的框架特征。
Each frame in the three levels is an inherent unity, a common framework for the different characteristics of shape.
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