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underframe 英/ ??nd?fre?m / 美/ ??nd?r?fre?m / - 1
机械工程 底架 The application in Zhenhua Port Machinery Company greatly reducing engine underframe design time, effectively shortening the product development cycle, the system is described successful. 在振华港口机械公司的应用,大大减少机房底架的设计时间,有效地缩短产品开发周期,说明了本系统是成功。
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This paper tells the calculation and test results of the rigidity and strength of all-closed large underframes on depressed centre flat cars D18A. Several problems concerned are analyzed. 本文介绍了D_（18A）型凹底平车全封闭式大底架结构刚度、强度的计算和试验结果，对与此有关的若干问题进行了分析。
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