Easy to operate, store jerrican accretion, reduce the labor density.

操作方便，贮油桶油量增大，减少操作者劳动密度。

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This is very important to ensure constant linear density of assembled roving in its winding process and reduce the labor intensity of operators.

对确保合股无捻粗纱络纱过程线密度稳定及减轻工人劳动强度有重要意义。

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The main content of this paper was launched around three key views: Labor, Qualityand Density of Utility.

本文主要内容是围绕三个核心观点展开的：劳动、质量和效用密度。

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