本機采用循環(huán)供油方式，降低油耗，性能有了進一步提高，使用方便得低線量，通過左右獨立的取現(xiàn)彈簧，可更細致地調節(jié)線的松緊。

The machine adopts circulary-oil-offerings.little oil-consuming.further improved capability quantity of base line confirming sindows,you can confirm the quantity of the base line by exterior adjustment of thread,through the right and left self-govetned spring as well.