The biggest challenge is water's inherent density. Accumulations crush all but the strongest gear.

最大的挑战来自于海水的固有密度，巨量的海水足以将最坚固的装置压碎。

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Horizontal density variation (HDV) is an inherent characteristic of non-veneer wood composites.

平面密度变异是非单板类人造板所固有的结构特点。

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Corn ethanol's low power density is inherent in all biomass, which leads us to the second of the Four Imperatives.

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