allowable_stress_range_of_fatigue

1.The proposed formula used to evaluate the allowed fatigue stress range shows that a new amendment for the criterion of allowable fatigue stress provided in the current code is necessary.
提供的公式可用来估定合乎实用的疲劳应力幅值，表明现行规程中提供的疲劳容许应力指标需要加以修正。
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