短语词组短語roll plate bending machine 三輥彎板機;四輥卷板機roll -bending 滾彎four -roll plate bending 薄板滾彎成形4 -roll plate bending machine 滑板式工作台three -roll plate bending machine 三輥彎板機finite element in roll -bending 鋼輥彎成型有限元 返回 roll bending