surface durability

基本解釋

Surface Durability: The concept of durability is an important one for all backcountry travelers to understand.
地表的耐久力：耐久力是需要所有野外旅行者懂得的一個重要概念。
The definition formulas and new calculation formulas for transverse load factors of tooth strength and surface durability are proposed.
分別提出了彎曲與接觸強度端面載荷系數(shù)的定義式和新的計算式。
Surface Durability: The concept of durability is an important one for all backcountry travelers to understand. The following natural surfaces respond differently to backcountry travel.
地表的耐久力：耐久力是需要所有野外旅行者懂得的一個重要概念。以下的自然地表對野外行進有不同的反應(yīng)。

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