船舶老化相关论文
长航凤凰3月20日发布公告,董事会已经同意公司购买2艘50000吨级沿海散货船。此外,因船舶老化接近强制报废年限或低效亏损运营,将处......
Corrosion and fatigue properties of aircraft materials are known to have a considerable scatter due to the random nature......
