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- nitrogen oxygen atmosphere 氮氧混合气
- But because this environment is so much like the early Earth, it gives us a handle on what kind of creatures might have existed before we had an oxygen atmosphere. 但是正因为这种环境与地球早期的环境很相似，它能让我们理解早在地球形成有氧大气之前会存在什么样的生物。”
- The emissions of nitric oxides increase with the increase of oxygen fraction in oxygenic atmosphere. 氧量的增加使得NOx和N2O生成量增加。
- Helium nitrogen oxygen saturation diving 氦氮氧饱和潜水
- sintering with rich oxygen atmosphere 富氧烧结
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- Furthermore, after the separation point appears, the temperature of the very point in oxygenated atmosphere rises steeply in a short time. 并在分离点出现后，有氧气氨中的该位置温度在短时间内急剧上升；
- Keywords LiMn 2O 4;oxygen atmosphere;kinetics;synthesis; 锰酸锂;氧气气氛;合成动力学;
- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- The main reservoir of nitrogen is the atmosphere. 氮的主要蓄存库是大气层。
- Water contains hydrogen and oxygen. 水含有氢和氧。
- Nitrogen forms four-fifths of the atmosphere. 氮气占空气的五分之四。
- The meeting is gone on in very friendly atmosphere. 会议在非常友好的气氛中进行。
- That film creates an atmosphere of menace. 那部影片营造出吓人的气氛。
- Danger lurked in the atmosphere. 氛围中隐藏着危险。
- Unlike oxygen, the element nitrogen is inactive. 与氧不同，元素氮不活泼。
- Nitrogen forms about four-fifths of the atmosphere. 氮约佔大气的五分之四。
- Oxygen enters into many compound bodies. 氧是许多化合物的组成部分。
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- Is a nitrogen atmosphere needed for hand soldering? 手工焊接需要使用氮气吗?
