The concentration of alternate stress is a key factor of fatigue destruction.
而交变应力集中是疲劳破坏的一个关键因素。
The treatment time is the most important factor to keep the effective concentration of Phosphine.
处理时间是保持磷化氢有效浓度的重要因素。
The treatment time is the most important factor to keep the effective concentration of Phosphine.
处理时间是保持磷化氢有效浓度的重要因素。
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