郑乃源 Nai-Yuan Cheng
懒惰乃万恶之源 Idleness is the root of all evil
乃源
Naogen
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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;
youdao
应用推荐
模块上移
模块下移
不移动