... inspection gallery 检修通道 inspection gas valve 燃气检查阀 inspection gas valve 燃气检查阀检查汽缸燃烧情况的阀 ...
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gas leak inspection of valve 活门气检
·2,447,543篇论文数据，部分数据来源于NoteExpress
The yield of a natural gas well in an oilfield dropped suddenly, which was due to the piston sheath of the choke valve breaking into three parts with two pairs of fractures after inspection.
某油田一天然气井的产量突然下降，经检查发现该井采气装置中的节流阀柱塞套断裂为三截，形成了两对断口。
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