The structure of this system is demanded mainly from carry cable, track cable and hanger. it is a strong geometry nonlinear structure.

该系统的承重结构主要是由承重索、轨索、吊索组成的一个索网结构，具有较强的几何非线性。

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Where do we find the material strong enough yet lightweight enough to act as a cable or track?

我们在哪里可以找到足够坚固且足够轻的材料来充当电缆或轨道呢？

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'we were going out to track down two bank robbers when the cable came,' he replied.

电报来的时候，我们正在追两个抢银行的抢匪，'他答道。

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First of all, every commuter rail system has full time maintenance crews, and they always have plenty of work: changing lightbulbs in the tube, fixing a signal that got bumped, replacing an on-track communication cable that was vibrated out of place and smashed, etc.

FORBES: Why Does BART Need To Do Nightly Maintenance?

City officials acknowledge that the open air cable cars, which ply only eight miles of track, produce a disproportionate amount of accident-related costs.

NPR: San Francisco Cable Car Accidents Costs Millions

Business Secretary Vince Cable insisted the government was "on the right track", and called on Labour to set out what it would cut if the party was in power.

BBC: UK economy 're-entering danger zone' - Balls