... valve reseater 气门修整机 valve reseating 气门座的研磨; 阀座重修整 valve reseating tool 装气门机 ...
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safety valve reseating pressure 安全门回座压力
valve reseating tools 及其配件
reseating of valve seat 更换阀门座
·2,447,543篇论文数据，部分数据来源于NoteExpress
The main reasons were due to the defect in the design of safety valve secondary circuit and the overlap of the service rating and the setting for safety valve popping and reseating.
主要原因是锅炉安全阀二次保护回路设计有缺陷，再加上安全阀起跳和回座的整定值与运行额定值相重叠造成的。
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