Natural gas hydrate is a cage-like crystalline compound similar to ice and its formation is related to these factors, such as pressure, temperature, water-gas contact area and additive, etc.

天然气水合物是一种类似冰的笼型晶体水合物。它的生成与压力、温度、气水接触面积以及添加剂等因素有关。

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To produce usable gas, methane is separated from from a "cage" of ice by sucking out seawater to lower the surrounding pressure.

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