Oxygen and carbon dioxide from the air enter through the stoma.
氧和二氧化碳从空气中进入气孔。
Oxygen and carbon dioxide from the air enter through the stoma.
树吸收二氧化碳，释放氧气，从而保持空气清新。
The monitors are used to track vital signs, as well as oxygen and carbon dioxide levels, in patients.
这种监护仪用于追踪患者的生命体征以及氧气和二氧化碳的含量。
The fast and parallel monitoring of oxygen and carbon dioxide in respiratory gases is chosen as a study example.
选取呼吸气体中氧和二氧化碳的快速平行检测为研究实例。
Your body's ability to exchange oxygen and carbon dioxide increases and it can deliver nutrients to your muscles.
身体中氧气和二氧化碳的置换功能开始增加，而且身体开始运送营养物质到肌肉中去。
There were no effects of open chest surgery upon anatomical dead space or metabolism of oxygen and carbon dioxide.
剖胸本身对解剖死腔和氧及二氧化碳代谢无重要影响。
Saturn's second-largest moon Rhea has a thin atmosphere filled with oxygen and carbon dioxide, scientists said today.
科学家今天声称，在土卫五——土星的第二大卫星星—一层稀薄的大气中含有氧气和二氧化碳。
Doctors say that over time the damage interferes with the natural exchange of oxygen and carbon dioxide in the lungs.
医生表示，久而久之，肺部的这种损坏会干扰肺部氧气和二氧化碳的自然交换。
Blood does many things, of course, and artificial blood is designed to do only one of them: carry oxygen and carbon dioxide.
当然，血液能够做很多事情，而人工血液只能做其中的一件事：运输氧和二氧化碳。
They said that their experiments showed that raising or lowering oxygen and carbon dioxide levels in the blood did not produce that reaction.
研究人员称，实验表明，提高或降低血液中氧气和二氧化碳的含量不会导致那种反应。
The carbonized base material is then activated by a second heat - steam treatment (200-1600 C) while regulating oxygen and carbon dioxide levels.
炭化的基础材料，然后激活第二热-蒸汽处理（200-1600C），同时调节氧气和二氧化碳的含量。
The convective diffusive problems of oxygen and carbon dioxide in human airway at normal respiratory status were studied theoretically in the present paper.
我们探讨了正常呼吸状态下人体气道内氧及二氧化碳对流扩散问题。
One that resuscitates, as an apparatus that forces oxygen or a mixture of oxygen and carbon dioxide into the lungs of a person who has undergone partial asphyxiation.
使人恢复知觉的东西，如一种仪器，迫使氧气或氧气与二氧化碳的混合物进入窒息的人的肺中。
The diagnosis is made on the basis of lung function tests, chest X-ray, measurement of the levels of blood oxygen and carbon dioxide, examination of the sputum and other tests.
诊断的基础上作出的肺功能测试，X线胸片，测量水平的血液氧气和二氧化碳，考试的痰液和其他的测试。
Blood gas analysis used to determine blood oxygen and carbon dioxide excretion function, ECG and cardiac ultrasound to confirm the ability to withstand open-chest heart surgery.
血气分析用以判断血中氧和二氧化碳的排泄功能，心电图和心脏超声检查以确认心脏能否承受开胸肺切除手术。
The new preservatives through using the beneficial bacterium had more advantages than general antiseptic to promote oxygen and carbon dioxide gas exchange. They had broad application prospects.
利用有益菌研究发防腐剂较一般的防腐剂能更好地促进氧气与二氧化碳气的交换，有广阔的应用前景。
Burning fossil fuels uses oxygen and produces carbon dioxide.
燃烧化石燃料消耗氧气并产生二氧化碳。
Humans take in oxygen and breathe out carbon dioxide.
人吸入氧气，呼出二氧化碳。
Second, once sleep is fully obtained, there is an increase of carbon dioxide and a decrease of oxygen in the blood that persists during NREM.
第二，一旦完全进入睡眠状态，非快速眼动期间血液中的二氧化碳增加，氧气减少。
This occurs because during NREM sleep the automatic, metabolic system has exclusive control over breathing and the body uses less oxygen and produces less carbon dioxide.
这是因为在非快速眼动睡眠中，自动的新陈代谢系统对呼吸有排他的控制，身体消耗更少的氧气，产生更少的二氧化碳。
During sleep the automatic metabolic system is less responsive to carbon dioxide levels and oxygen levels in the blood.
在睡眠期间，自动的新陈代谢系统对血液中二氧化碳和氧气的含量反应并不灵敏。
Only after several inadequate breaths under such conditions, resulting in the considerable elevation of carbon dioxide and reduction of oxygen in the blood, is breathing effort adjusted.
在这种情况下，只有在几次呼吸不足出现，导致血液中二氧化碳大量增加和氧气减少后，呼吸的力度才得到调整。
Rainforests are the lungs of the planet storing vast quantities of carbon dioxide and producing a significant amount of the world's oxygen.
雨林是地球之肺，储存了大量的二氧化碳，并为世界生产了大量的氧气。
Some of the carbon therefore ends up as soot, rather than carbon dioxide, and oxygen that should be combining with carbon combines with nitrogen from the air instead.
其中的一些碳最终以烟雾而非二氧化碳的形式排放出来，而那些本该与碳结合的氧分子则转而与空气中的氮结合。
When you burn a hydrocarbon fuel such as oil, its hydrogen and carbon atoms combine with oxygen from the atmosphere to create water and carbon dioxide.
当你在烧氢类燃料(如石油)时，燃料中的氢原子和碳原子与空气中的氧结合反应，生成了二氧化碳和水。
Through photosynthesis, leaves use the power of sunlight to assemble sugars using only carbon dioxide, oxygen and water.
通过光合作用，树叶仅仅借助太阳能就能把二氧化碳，氧气和水转换成糖份。
Through photosynthesis, leaves use the power of sunlight to assemble sugars using only carbon dioxide, oxygen and water.
通过光合作用，树叶仅仅借助太阳能就能把二氧化碳，氧气和水转换成糖份。
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