On constant frequency ratio, loading ratio has an importance influence on the initiation and propagation of fatigue crack under double frequency complex loading.
在频率比确定的条件下，载荷比是影响双频疲劳裂纹萌生及扩展的一个重要因素。
The influence of amplitude, frequency of dynamic loading on critical safety thickness of top pillar has been analyzed.
分析了动荷载振幅、频率对顶柱临界安全厚度的影响。
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