The definition formulas and new calculation formulas for transverse load factors of tooth strength and surface durability are proposed.
分别提出了弯曲与接触强度端面载荷系数的定义式和新的计算式。
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个重要概念。以下的自然地表对野外行进有不同的反应。
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个重要概念。以下的自然地表对野外行进有不同的反应。
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