求翻译：从物理性质来看，天然气水合物的密度接近并稍低于冰的密度，剪切系数、电解常数和热传导率均低于冰。天然气水合物的声波传播速度明显高于含气沉积物和饱和水沉积物，中子孔隙度低于饱和水沉积物，这些差别是物探方法识别天然气水合物的理论基础。此外，天然气水合物的毛细管孔隙压力较高。是什么意思？

Terms of physical properties, the density of the gas hydrate is close to and slightly lower the density of the ice, the shear coefficient, electrolysis constant, and thermal conductivity were lower than the ice. Acoustic propagation velocity of the gas hydrate-containing of gas sediments and water-s

From physics, gas hydrates and the slightly lower density near the density on the ice, the cut factor, and electrolytic constants and thermal conductivity are low on the ice. Natural Gas Hydrates of the wave propagation speed is obviously higher than air saturated sediment and water deposits, neutro

Looked from the physical property that, the natural gas hydrate density close and is lower than the ice slightly the density, the cutting coefficient, the electrolysis constant and the heat conductivity is lower than the ice.The natural gas hydrate sound wave propagation velocity is higher than the

Judging from the physical properties of natural gas hydrate density closer and slightly lower than the density of the ice, C, electrolytic constants and thermal conductivity is lower than ice. Acoustic wave propagation speed significantly higher than the gas of natural gas hydrate sediment and water

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