Gas hydrate is commonly called flammable ice, methane ice, methane hydrate.
天然气水合物俗称可燃冰，甲烷水合物。
On the one hand flammable ice or in the vastness of the ocean bottom, or at risk far alpine permafrost zone, the development very difficult.
一方面是可燃冰要么位于浩瀚的大洋底部，要么位于高寒险远的冻土带上，开发的难度非常大。
Safety: High flash point, flammable, without explosivity. Foam, dry powder, dry ice, steam and water can be used for extinguishing fire.
安全性：闪点较高，可燃，爆炸性：无。着火时，用泡沫、干粉、干冰、蒸汽、水等灭火。
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