This machine is very suitable for the sewing of most fabrics except for those which have a great deal of elasticity, when a machine with a loop formation to the stitch would be more appropriate.
这种机器适用于缝制多数面料，但不适用弹性十足的面料，带有成圈装置的机器适合用来缝制弹性十足的面料。
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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