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。
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。
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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