arteriovenous oxygen difference 动静脉氧差
coronary arterioveno-oxygen difference 冠状动静脉血氧差
dissolved oxygen difference 溶解氧偏差
arteriovenous oxygen content difference 动静脉氧含量差
oxygen arterio-venous difference 动静脉氧差
venous oxygen content difference 动脉静脉氧气含量差
The major difference is that Allende is depleted in the most volatile elements, like hydrogen, carbon, oxygen, nitrogen, and the noble gases, relative to the Sun.
主要的差别是，相比于太阳，阿连德陨石缺失了大部分的挥发性元素，例如氢、碳、氧、氮和稀有气体。
Quartz is quartz—a silicon ion surrounded by four oxygen ions—there's no difference at all between two-million-year-old Pleistocene quartz and Cambrian quartz created over 500 million years ago.
石英是石英——由四个氧离子围绕的硅离子——200万年前的更新世石英和5亿年前的寒武纪石英之间没有任何区别。
Because the temperature difference between the product and the surrounding environment is substantial-even in the winter-keeping liquid oxygen insulated from the surrounding heat is essential.
因为产品和周围环境的温差即使是在冬天也非常大，保持液氧和周围环境隔离是很重要的。
"Our study showed for the first time a clear difference between oxygen and air in the treatment of acute cluster headache.
VOA: standard.2009.12.17
"Twenty percent of attacks were improved on placebo,which is air, and 78 percent of attacks were improved on oxygen, a clear difference in favor of oxygen,"
VOA: standard.2009.12.17
"Oxygen has just made all the difference for me.
VOA: standard.2009.12.17
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