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11. | Insulators for low voltage power lines Part 1: Insulators for low voltage overhead power lines |
| GB/T1386.1-1997低压电力线路绝缘子第1部分:低压架空电力线路绝缘子 |
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12. | Pin-type insulators of ceramic material for overhead telegraph lines |
| GB/T774-1993架空通信线路针式瓷绝缘子 |
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13. | estimated that in suburban areas underground lines cost, on the average, about 8.5 - 10 times more than overhead |
| 根据目前的技术,据估计,在市郊地区地下输电线路的造价平均是架空线路的8.5—1 O倍。 |
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14. | capacity in cable is the restriction on the temperature rise of the insulating material used; with overhead |
| 电缆载流容量不足的主要原因是受所采用绝缘材料温升的限制,而对于架空线路这并不是严重问题。 |
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15. | breakeven point between alternating cur-rent and direct current is approximately 400 miles (640 km) for overhead |
| 目前,交流输电与直流输电的等造价距离对于架空线大约为400英里(640公里),对于地下电缆大约为20一25英里(32—40公里)。 |
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16. | The link between overhead power lines and cancer was first made in America in 1979. |
| 美国在1979年第一次提出高架在头上的高压电线与癌症有关系。 |
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17. | general purpose lines of overhead |
| 一般用途信用限额 |
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18. | for quality inspection and evaluation of petroleum construction engineering Electrical engineering(overhead |
| 石油建设工程质量检验评定标准电气工程(架空电力线路工程) |
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19. | Insulators for low voltage power lines Part 2: Strain insulators for overhead power lines |
| GB/T1386.2-1997低压电力线路绝缘子第2部分:架空电力线路用拉紧绝缘子 |
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20. | Limits of radio interference from AC high voltage overhead power transmission lines |
| GB15707-1995高压交流架空送电线无线电干扰限值 |
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