The lower flammable limit is listed as 2 percent but testing has shown flammability at levels well below this concentration when various diluents are introduced.是什么意思_The lower flammable limit is listed as 2 percent but testing has shown flammability at levels well below this concentration when various diluents are introduced.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句