作为一项理论研究参考，可以为摇纱机提供更为理想的导纱规律设计方法。

Through the comparison of the three motion laws, the research finding can be regarded as a theoretical information for the design of the better yarn guiding device for reeling machine.

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结果表明，气动V形牵伸机构在生产中适合大牵伸工艺，粗纱定量加重，成纱质量较弹簧摇架加压好。

The result shows that pneumatic V type draft mechanism is suitable for large draft technology in production, and if weighing roving quantum, yarn quality is better than pressure of spring cradle.

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该仪器兼有纱线摇黑板和缕纱测长的两大功能，而且结构简单、紧凑，性能价格比高，可降低用户的测试成本。

The instrument has two functions such as sample yarn winder and measuring reel. It also has the simple and compact structure and high performance price ratio which can reduce the test costs of users.

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