overhead

• Discussion on the design of the overhead transmission line
  架空输电线路设计小议
• Electric traction overhead lines - section insulators
  电力牵引架空线.分段绝缘子
• Performance standard for overhead electric wire rope hoists
  桥式起重机性能标准
• Wood poles for overhead lines - durability requirements
  架空线用木杆.耐久性要求
• Pvc - covered conductors for overhead power lines
  悬吊式动力线用聚氯乙烯覆盖导体
• Specification for insulated overhead travelling cranes
  绝缘桥式起重机.技术条件
• Overhead lines - requirements and tests for spacers
  架空线.分隔器的要求和试验
• Hard - drawn aluminium wire for overhead line conductors
  用于架空导线的冷拔铝丝
• Conductors for overhead lines - zinc coated steel wires
  架空线路用导线.镀锌钢丝
• Overhead conveyors for enclosed track . specification
  封闭轨悬挂输送机.技术条件