Belt drives — Narrow V-belts — Sections 9N/J, 15N/J and 25N/J (lengths in the effective system)
带传动——窄V带——第9N/J、15N/J和25N/J节（有效系统中的长度）

2003-01-30

Belt drives. Grooved pulleys for narrow V-belts. Groove sections 9N/J, 15N/J and 25N/J (effective system)
皮带传动 窄V形皮带的槽形皮带轮 槽截面9N/J、15N/J和25N/J（有效系统）

2001-10-25

Belt drives — Grooved pulleys for joined narrow V-belts — Groove sections 9N/J, 15N/J and 25N/J (effective system)
带传动——用于连接窄V带的槽形皮带轮——槽截面9N/J、15N/J和25N/J（有效系统）

2001-09-06