long-term operation life test
... welder operation qualification test 焊工上岗资格认定 long-term operation life test 长期工作寿命试验 high-temperature operation life test 高温工作寿命试验 ...
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利用该模型，根据少量试验数据可预示长期冷热循环下的永久变形或工作寿命。
Using this model the permanent distortion and work life in long term under thermal cycling can be predicted based on a few test data.
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