original crack size
... oriented silicon iron 取向硅铁 original crack size 原始裂纹尺寸 Orthonik 镍铁磁心材料 ...
基于20个网页-相关网页
·2,447,543篇论文数据，部分数据来源于NoteExpress
结果得出：阀体失效的主要原因是阀体本身存在严重的铸造缺陷，铸造疏松严重、孔洞尺寸大乃于形成原始裂纹源；
The results showed that the root reason for valve body failure was seriously casting defect exist and its big and density shrinkage porosity form the original crack;
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