Making up around 5.6 per cent of the surface material, it was present in sufficient quantities to be useful to future manned missions.

在月球表面，水约占总物质含量的5.6%，这些储存量足够保障人类未来在月进行的各种探索任务。

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To achieve the desired lightweight construction, BMW will need to use very large quantities of the material — 150 to 200 kilograms (330 to 440 pounds) per vehicle.

要制成想要的轻质结构，宝马得用大量材料——每辆车需要150到200千克(330到440磅)。

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Using a single material for two functions has great potential for carmakers, says Per-Ivar Sellergren, a senior engineer at Volvo's material Laboratory in Gothenburg.

使用单一材料达到两种功能对汽车制造商来说拥有广阔的潜力，这么说的佩尔·伊瓦尔·塞勒·格伦是沃尔沃在哥德堡的材料实验室的一名高级工程师。

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Sometimes, newer operations might only get a gram of gold per ton of mined material.

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This incessant march of energy density (more energy per unit of raw material) has undeniable logic, deniable only by the illogical or irrational.

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