载荷谱是起重机分级、结构疲劳强度试验研究和寿命估算的重要依据。

Load spectra are important basis on which the classification of cranes, the experimental study of fatigue limit of the crane framework, and the evaluation of its life limit are based.

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目前，国内柴油机行业普遍使用的曲轴弯曲疲劳强度试验台架，均采用音叉共振板结构。

At present, tuning-folk resonance plate structure is common used in crankshaft bending fatigue test bench in domestic diesel engine industry.

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构件的疲劳强度分布是由材料疲劳强度试验的结果经统计处理后，用两条拟合曲线来描述的。

The frame 's fatigue strength distribution has been obtained by calculating the experimental result of material fatigue test and has been described by means of two regression curves.

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