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介绍了原料的选配、纱工艺流程、工序的主要工艺参数选择和成纱质量。
The material selection, spinning technological process, main processing parameters and the quality of yarn are discussed.
列车质量与速度是影响运输能力与成本的重要因素，其优化选配对快速与高速列车尤为重要。
Train mass and train speed are the important factors affected to transport capacity and traffic cost. Their optimized selection is more important to express train and high speed train.
纺织原料选配影响着成纱质量与成品成本。
Selected matching of textile raw materials not only affects the quality of yarn, but also the cost of finished products.
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