1) long-span
长跨距
1.
The construction of unrepeatered long-span optical fiber communication systems is of great significance for the transmission of power system information using Chinese ultra-high voltage power grid.
构建无中继长跨距光纤通信系统对于利用我国特高压电网传输电力系统信息具有重要意义。
2) ultra-long span
超长跨距
1.
This paper introduces the ultra-long span non-repeater optical transmission technologies, the solutions of the Fiberhome Inc.
介绍了超长距离无中继(超长跨距)光传输技术,烽火超长跨距光传输的解决方案、特点和应用。
3) ultra-long span transmission
超长跨距传输
4) long span optical transmission
长跨距光传输
5) long-span unrepeatered
长跨距无中继
1.
Because of its good performances, fiber Raman amplifier is one of the key techniques to build long-span unrepeatered communication system.
光纤拉曼放大器由于其优良的性能,是构建长跨距无中继光纤传输系统的关键技术之一。
6) long structures and pipeline
长跨距结构与管线
补充资料：跨下
1.两腿之间。跨，通"胯"。 2.指韩信受辱胯下事。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。