There are a lot of low permeability gas fields in our country.For their low natural deliverability, they need to be fractured to get industrial gas flow.是什么意思_There are a lot of low permeability gas fields in our country.For their low natural deliverability, they need to be fractured to get industrial gas flow.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句