它将点燃固体推进燃料(HTPB，或称羟基封端聚丁二烯)和液体氧化剂(高挥发性过氧化物，HTP)的混合物持续20秒。

It will burn a mixture of solid propellant (HTPB, or hydroxyl-terminated polybutadiene) and liquid oxidiser (high-test peroxide, HTP) for 20 seconds.

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无烟煤一种很亮的高密度煤，含炭量高，挥发性物质少，燃料时火焰纯净。

A dense, shiny coal that has a high carbon content and little volatile matter and burns with a clean flame.

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与仅可储存电量的普通电池不同，燃料电池可以通过诸如氢、烷等挥发性物体产生电能。

Unlike batteries, which simply store energy, fuel cells actually generate it from volatile stuff such as hydrogen or methanol.

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