atmospheric oxygen短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 机大气中的氧气 During the frying process the fat undergoes several chemical and physical changes caused by heat, water and atmospheric oxygen. 油脂在煎炸过程中,由于温度高及水分和氧气等存在,将发生一系列物理化学变化; cnki In the history of biological and geochemical evolution, oxygen rise is a critical event. Some crucial evolutionary steps were linked to the elevated atmospheric oxygen. 在生物和地球化学进化史上,氧气的出现是一个关键的历史事件,代谢方式的改变直接促进了高等生命的进化。 fabiao