Three-rail system ensures the stable transportation of boxes.

三轨道系统确保盒子传输平稳。

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The role, working principle, structure and commonly used material of steel aluminum composite conductor rail in the three-rail system are introduced.

介绍钢铝复合导电轨在三轨系统中的作用、工作原理、结构和常用材料。

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It took a lot of money and nearly a decade to make the three rail networks function together, but the end result is that a freight train now takes about three days to run from Ndola to Durban.

人们花了很多钱，用了将近十年时间，才将三条公路网连在了一起。

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"It includes three hundred million dollars to buy new cars for the government, eight billion dollars for high-speed rail projects, such as a 'magnetic levitation' line from Las Vegas to Disneyland, and one hundred forty million dollars for something called 'volcano monitoring.'

VOA: special.2009.02.27

"At a per-passenger-mile basis, rail is about three times as efficient as travel by car, in terms of fuel efficiency, and six times as efficient as travel by air, so there are pretty substantial pollution reduction benefits both in terms of greenhouse gases and other pollutants."

VOA: standard.2010.02.15

It boasts exclusive equestrian trails and a laid-back lifestyle, complete with white three-rail fences, and no sidewalks or street lights.

FORBES: Hidden Hills, Los Angles County, California

"High-speed rail has three advantages over air travel, " Si Xianmin is reported to have said with refreshing frankness.

ECONOMIST: Business travel

It's now only four and a half hours from Hefei to Shanghai on the newly built highway and less than three by the new high-speed rail link.

NPR: China Seeks Cheaper Labor Within Its Borders