带中心孔的镍基高温合金GH4049的高温疲劳短裂纹扩展规律
대중심공적얼기고온합금GH4049적고온피로단렬문확전규률
Study on Groeth Behavior of Elevated Temperature Small Fatigue Cracks in Ni-Base Superlloy GH4049 with a Central Hole
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