A modern sports glider, with long, slender wings, is the most aerodynamically efficient aircraft, with a lift-to-drag ratio of around 50:1.

现代运动用滑翔机的机翼长而细薄，拥有最佳的空气动力学效率，其升阻比达到50：1。

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Then they popped the fish into a wind tunnel to calculate their lift-to-drag ratios, sometimes called the glide ratio.

之后，将其放入风洞以计算升阻比，有时也被称为滑翔比。

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A light aircraft typically has a lift-to-drag ratio of around 10:1; for a hang-glider, the ratio is about 15:1.

一架轻型飞机通常拥有10：1的升阻比；而对于悬挂式滑翔机来说，这个比例大概是15：1。

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It will, he claims, have a lift-to-drag ratio eight times better than a jet airliner's, with a consequent saving in energy.

ECONOMIST: Maglev trains