甲烷气泡

通过对锅炉管爆裂处的金相组织、成分、力学性能、腐蚀产物和供水指标的观测与分析，找出了爆裂的原因。结果表明：供水pH值超标，H~+离子聚集以至形成甲烷气泡并相互连接；

To find the cause of damage , the microstructure in the section of tube crevasse , chemical composition , mechanical properties , corrosion product and water quality were observed and analyzed . index ;

当这些不断上冒的甲烷气泡达到一个临界值时，这些气体就会爆炸，冲破西伯利亚地表。

Once the welling methane blobs reach a critical threshold , the gasses blast through the Siberian crust .

由腐烂的动物和植物滋生的细菌产生的甲烷气泡上升到湖面，通常没有人注意到。

Caused by bacteria feeding on decaying animal and plant matter , the methane bubbles usually rise to the surface without anyone ever noticing .

结果出来了，科学家们说，在实验中产生了甲烷小气泡。

The experiment produced tiny bubbles of methane gas , the scientists reported .

铁炉渣添加后甲烷的气泡传输量明显降低了。

Methane bubbles in the iron blast furnace slag added traffic is significantly reduced .

而空气中甲烷的正常含量大约为0.000179%。这种刺激性气体从逐渐融化的永冻土中渗透出来，随着全球气候变暖，源源不断的甲烷气泡越来越快地向地表聚集。

Air is normally about 0.000179 percent methane.The offending gas seeps up from thawing permafrost . And as global temperatures rise , clumps of methane bubble toward the surface faster and faster .