seal gas pressure

基本解释

A new type of dry gas seal structure and working principle applied on high pressure ammonia pump were recommended.
介绍了一种新型高压氨泵采用干气密封的结构及工作原理。
The analysis of the corrosion in refinery low-pressure fluid seal gas holder reveals that the corrosion is mainly caused by the sour gas containing H_2S and CO_2, etc.
对炼油厂低压湿式螺旋气柜的腐蚀原因进行分析，结果表明：腐蚀主要是由H_2S和CO_2等酸性气体引起。
Developed nations are under intense pressure to agree to deep 2020 cuts in greenhouse gas emissions to try to seal an agreement at the end of this year that will replace the Kyoto Protocol.
想要在年底达成替代京都议定书的协议，发达国家在减排目标上面临巨大的压力，他们需要同意提高到2020年的减排额度。