늄ӴľSoͱB
2**õĝ56СrQԺÿ500СrQһ
3ԇÏSLͣõıȲMзP̎Ȱԇ|Ń
4zõ݆USg϶U0.04-0.07mm,݆0.05-0.10mm粻
ϴֵ{ͨww|w|
5늄Ӵڭhض0ʹ|ˮrӷh׃Ծ