Commom internal dangerous defects of forging round steel are analyzed based on the production process.
结合生产工艺过程,分析锻制圆钢常见内在危害缺陷产生的原因.
This is a commom phenomenon, and it called as "obstacles of acception".
学术界将这种现象称为接受障碍。
Vaccum system commom problems analysis and treatment of Zimmer PET process
吉玛PET工艺真空系统常见问题分析及处理方法
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