service conductor

Composite iron carbon conductive head takes solidified high temperature conductor as packing material, and it can prolong 5 to 10 times service life of copper head usually used in fining furnace.

铁碳复合导电头以耐高温热固化导体材料作填充料，用它替代铁合金精炼电炉常用的铜头，其使用寿命可延长5～10倍。

The Conductor system was introduced in the early days of tram service.

早期的电车服务采用售票员制度。

By analyzing, the reliability and economy of aerial insulated conductor ( i.e. aerial cable) are much better than bare wire in service.

通过对10kV架空绝缘导线（以下简称架空电缆）性能分析，指出架空电缆在线路运行中的可靠性、经济性以及架设施工、维修便利等方面都优于裸导线。

" Could you let me have a meal ticket?" Leaving the dinning-car I asked the conductor for the first service.

你能给我一张餐券吗？离开餐车时，我跟乘务员索取第一批就餐券。