The technique first welding together then bending for t sections can save a lot of material and labor cost, and has outstanding advantages.

T型材的先焊后弯工艺可以节约大量的材料和劳动力成本，具有明显的优势。

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Applied Materials (nasdaq: AMAT - news - people ), are working to improve another thin-film technology that is extremely cheap but so inefficient it can't yet match First Solar in cost per kwh.

FORBES: Storm Clouds

The first railways couldn't rival canals on cost or reliability, let alone lobbying power.

WSJ: After Japan's Earthquake and Fukushima Disaster, Matt Ridley on Gas-Fired Generation and Thorium | Mind & Matter

The official answer to the first question is it won't really cost anything - or at least, nothing that will formally count as new spending or new debt.

BBC: Mr Osborne's small plan for big infrastructure