求翻译：但是由于变截面细长轴在成型加工过程中特别容易由于刚度或是应力集中等问题而产生截面椭圆变形和轴线弯曲变形，故在投入市场使用之前，需要对其进行进一步地矫直加工。是什么意思？

However, due to the variable cross-section slender shaft in the molding process are particularly vulnerable due to stiffness or stress concentration problem generated cross-section the oval deformation and the axis bending deformation, so the use of the market before it needs to be further straighte

But the change in cross-sectional slim shaft molding process, especially because it is a torsional rigidity or issues such as stress concentration and produce cross-sectional ellipse deformed and axis bent out of shape, the market prior to use, it needs to be further processed to straighten.

But is specially easy as a result of the variable cross-section thin major axis in the formation processing process as a result of questions and so on rigidity perhaps stress concentration has the section ellipse distortion and the spool thread bending strain, therefore in puts into before the marke

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