20CrNi2MoA渗碳淬火齿轮齿根磨削对轮齿弯曲疲劳强度影响的试验研究
20CrNi2MoA삼탄쉬화치륜치근마삭대륜치만곡피로강도영향적시험연구
Test and research of the influence upon gear bending fatigue strength affected by grinding on teeth roots of 20CrNi2MoA carburizing quenched gears
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