球形煤气贮罐是由高强钢制成的且每日都要承受压力循环的容器。
Spherical gas storage tanks are large pressure vessels made of high strength steel and exposed to daily pressure cycle.
在焦化生产过程中，煤气设备及容器内容易出现负压而造成设备损坏。
In the pyrogenic production procedure, negative pressure may exit in gas equipment and containers and consequently damage them.
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