架设于地面上，利用绝缘子和空气绝缘的电力线路 架空线路由导线、架空地线、绝缘子串、杆塔、接地装置等部分组成。
架空输电线路巡检系统 Patrol system for overhead lines
架空输电线路施工 Overhead transmission line construction
高压架空输电线路 overhead HV transmission line
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钢芯铝绞线目前大量用于架空输电线路。
ACSR is now widely used in overhead power transmission lines.
摘要：架空输电线路是电力网及电力系统的重要组成部分。
Abstract: the overhead transmission lines is power grids and an important part of the power system.
塔头电气间隙校核是保证架空输电线路安全运行的重要措施。
The electric clearance check of tower head is an important measure to ensure the safe operation of overhead transmission line.
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