This ensures a constant perfect stitch formation even at maximum sewing speed and minimum thread tension.

即使机器在最高速运转，线张力最小时，也能保证线迹的稳定和优美。

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This ensures a constant perfect stitch formation even at maximum sewing speed and minimum thread tension.

即使机器在最高速运转，线张力最小时，也能保证线迹的稳定和优美。

youdao