... 甲基乙烯基硅橡胶(PMVS) polymethylvinylsiloxane(PMVS) 甲烷浓度 methane concentrations 甲烷转化 methane conversion ...
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Mandy Joye: the methane concentrations in these plumes are 100 to 10, 000 times what you would normally see in Gulf of Mexico water.
曼迪·乔伊：墨西哥湾原油层甲烷气体浓度是正常情况下的100到10000倍。
Current methane concentrations in the Arctic average about 1.85 parts per million, the scientists said, the highest in 400,000 years.
目前在北极地区甲烷浓度平均为大约百万分之1.85，科学家们说，这是40万年中的最高水平。
This was observed by diamond deposition on iron substrates where, due to the high vapor pressure of iron, ballas is formed at methane concentrations lower than 0.4%.
这一点是在铁基体上沉积金刚石时发现的。这时，由于铁的蒸汽压力很高，在甲烷浓度低于0.4%时可形成半刚石。
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