A powder coating designed to undergo an irreversible chemical change during heating and will not revert to the liquid stage when reheated.

受热后发生不可逆化学反应，当再次受热不会成为液态的粉末涂料。

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If these rays from the dying star were to wash over a once-frozen moon or exoplanet, the planetary body's icy layer would melt into liquid: setting the stage for life to form in a flowing ocean.

如果这些发自即将衰亡的恒星的射线能够辐射至那些一度冰冻的卫星和系外行星，那些星体上的冰层将会融化成液态：这将为生命的形成提供流动的海洋。

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Liquid oxygen started flowing into the two-stage Falcon 9 launcher at about 3 p.m. EST.

大约东部时间下午3点钟，液氧开始流入2级Falcon 9发射器。

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One interesting aspect of the Antares design is its use of two Aerojet AJ-26 engines on its liquid-fuelled first stage.

BBC: Orbital's Antares rocket makes test flight

Its Russian liquid-fuelled first-stage is said to produce 1, 700 kilonewtons of thrust at launch.

BBC: South Korea halts rocket launch

The top half would use the liquid-fuelled core-stage technology and engine that powers the Ariane 5.

BBC: New rocket could lift astronauts