As free drawing on the flatanvil, the size of feed plays the very important role to its drawing efficiency.
平砧上自由锻拔长，送进量的大小对其拔长效率起着至关重要的作用。
2
ANVIL: a small piece of ground and lapped steel attached to the frame of a micrometer; serves as a flat, fixed point from which measurements can be taken.