The chemicals fired into the sky, usually dry ice or silver iodide, are supposed to provide a surface for water vapour to form liquid rain.

发射上天的化学物通常是干冰或碘化银，它们应该能为水蒸汽提供一个表面以凝结成雨滴。

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The reactor tank fired four prominent tailgate, when stirring the liquid in the vessel wall to block the change in liquid flow, play a spoiler role, to achieve better mixing effect.

釜内胆烧制四条突出的挡板，搅拌时在釜壁阻挡液体从而改变液体流向，起到扰流作用，达到更理想的搅拌效果。

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In this paper, the method and some results of cold experimental investigations of liquid slagging coal-fired combustor are described.

本文叙述了液态排渣燃煤燃烧室冷态试验的研究方法和某些结果。

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Households with oil-fired central heating, and those using solid fuel or liquid petroleum gas to heat their homes, are much more likely to be in fuel poverty than "on-grid" households.

BBC: Winter Fuel Allowance Payments Bill