Physical property of American cotton was analyzed through test, American cotton fiber has good maturity, and the impurities were easy to excluded, so the yarn defects were obvious reduced.

通过试验分析了美棉的物理性能，美棉纤维成熟度好，纺纱过程中杂质易排除，因而成纱疵点明显减少；

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Methods of testing China uplands cotton fibre fineness and maturity coefficient rapidly by constant pressure airometer is discussed.

对采用定压式气流仪快速测定我国陆地棉纤维细度和成熟度系数的方法进行了探讨。

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Causes of neps and influences of maturity and fineness of raw cotton, quality of cotton ginning, opening and cleaning, carding and combing and so on processes on neps are analyzed.

文中对棉结的成因、原棉成熟度、细度、轧棉质量、开清棉、梳棉及精梳等工序对棉结的影响进行了分析。

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