Each steel cable is covered by a thin polymer tube (wrapped in stainless steel foil) to prevent rusting.

每根钢索均由覆有薄聚合物管（预先包在不锈钢箔内）以防生锈。

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The ultra-thin ribbon has been successfully used in a 108-fiber loose tube cable.

超薄型光纤带被成功地运用于108芯松管层绞光缆中。

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This paper explores the construction design of loose tube layer stranded ADSS cables by analysing the affecting factors and gives example for cable design.

分析了影响松套层绞式adss光缆结构设计的诸要素，探讨光缆结构设计方法，并给出了光缆的设计实例。

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An investigator with the state prosecutor's office told the Associated Press that the balloon had been landing at about 07:00 (05:00 GMT) when a landing cable got caught around a tube and a fire broke out on board.

BBC: Egypt balloon crash: Two Britons and UK resident die

The cause of the crash is still being investigated but is believed the balloon had been in the process of landing when a landing cable got caught around a gas tube and a fire erupted on board.

BBC: Egypt hot air balloon tragedy: Tributes paid to victims

According to initial indications, the balloon was in the process of landing after 7 a.m. when a cable got caught around a helium tube and a fire erupted, according to an investigator with the state prosecutor's office.

NPR: Fiery Balloon Accident Kills 19 Tourists In Egypt