the curved needle of the machine ensures that only a fraction of the main garment is caught, therefore allowing the stitch itself to be almost inconspicuous.
这种机器所使用的弯曲的针保证只勾住了衣服上的一小部分,因此使得线迹本身难以被察觉。
it was included that the curved needle machine is suitable for sewing cut pieces of middle tightness, middle thickness and middle grade, and…