中扁锉的英文

• flat middle file
• medium flat file
• middle flat file

• 中:    hit; fit exactly
• 扁锉:    flat file
• 扁锉:    [机械工程] flat file; mill file; equaling file
• 粗扁锉:    bastard flat file; coarse flat file
• 光扁锉:    dead smooth equalling file; dead smooth flat file