标 准 编 号:JIS B2011 AMD 2-2009 简体中文标题:青铜闸阀、球形阀、直角形阀和止回阀(修改件2) 繁体中文标题:青铜闸阀、球形阀、直角形阀和止回阀(修改件2) English Name: Bronze, gate, globe, angle, and check valves (Amendment 2)