根据基本的质量守恒定律、能量守恒定律以及一些经验公式等建立了系统的动态数学模型。
Based on the mass conservation law, the energy conservation law and some empirical equations, the dynamic model is built.
对其它的成纱品质的质量指标如可纺支数、粗节、棉结等的预测模型研究的比较少，尤其是国内的相关报道就更少。
However, not much research on other indexes of spinning yarn quality such as limit count, slubs, and neps were conducted, especially in China.
所建立的圆弧模型及求解方法可应用于定向井井眼轨迹控制和中靶质量评价等。
The established arc model and its solving method can be applied to directional well trajectory control and target hitting quality evaluation, etc.
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