• As the service module moved away, they saw for the first time the damage done by the exploding oxygen tank.

    VOA: special.2009.07.22

  • If we take hydrogen peroxide in the liquid state, it can break down to form water and oxygen.


    麻省理工公开课 - 热力学与动力学课程节选

  • times 7, plus we have 6 in the sulfur, and oxygen is right above sulfur, so that also has 6.


    麻省理工公开课 - 化学原理课程节选

  • She founded the Oxygen media company, the Oprah's Angel Network charity and the Harpo film,television and radio production company.

    VOA: special.2010.04.16

  • You could run the reaction, take solid iron gaseous oxygen, form iron oxide, measure the heat of formation of it, tabulate it.


    麻省理工公开课 - 热力学与动力学课程节选

  • Blood clots can kill if they move to the heart and lungs and stop needed oxygen from reaching those important organs.

    VOA: special.2009.07.14

  • That is metallic sodium that would keep in kerosene so it doesn't react with the oxygen in the air.


    麻省理工公开课 - 固态化学导论课程节选

  • At the time, scientists believed that a person at the top of the mountain would only have enough oxygen to sleep.

    VOA: special.2010.06.30

  • Because of the lack of oxygen getting to the cells, the cells are no longer able to carry on their various metabolic processes.


    耶鲁公开课 - 死亡课程节选

  • The atmosphere is about twenty-percent oxygen and eighty percent nitrogen from Earth's surface to where space begins at one-hundred-twenty kilometers up.

    VOA: special.2011.04.06

  • Some of them have the capability of becoming red blood cells which carry oxygen in the blood.


    耶鲁公开课 - 生物医学工程探索课程节选

  • Doctors say that over time the damage interferes with the natural exchange of oxygen and carbon dioxide in the lungs.

    VOA: special.2010.06.23

  • So oxygen gets 3 pairs, and each chlorine gets 3 pairs, so now we're up to 9 pairs.


    麻省理工公开课 - 化学原理课程节选

  • Far below sea level, they contain some of the harshest environments on Earth, with no oxygen and no light.

    VOA: special.2010.11.10

  • In this case, 6 valence electrons for each oxygen, so we have 18 total valence electrons.


    麻省理工公开课 - 化学原理课程节选

  • News reports said Adair used about three hundred forty kilograms of nitroglycerine explosive material to pull the oxygen out of the fire.

    VOA: special.2009.03.22

  • So, if we compare the sulfur to the oxygen, the oxygen it turns out is more electronegative and that is what holds the negative charge in this molecule.


    麻省理工公开课 - 化学原理课程节选

  • CPR,or cardiopulmonary resuscitation, can save a life and reduce the risk of brain damage from loss of oxygen.

    VOA: special.2009.06.09

  • And, in fact, if you take the jaws of a powerful magnet and pour liquid oxygen in between the jaws, the oxygen will stop and will sit in the jaws.


    麻省理工公开课 - 固态化学导论课程节选

  • But a drop in oxygen levels can cause a health emergency in people with heart or lung problems.

    VOA: special.2009.07.14

  • So in oxygen we have a similar situation where, in fact, we are not going to promote any of the electrons because we have two lone pair electrons no matter what we do.


    麻省理工公开课 - 化学原理课程节选

  • They make proteins including oxygen-carrying blood substances, antibodies to protect against disease, and substances that break down sugar.

    VOA: special.2009.12.08

  • Well, if you get the combustion chamber hot enough, in point of fact, there are some reactions between nitrogen and the oxygen.


    麻省理工公开课 - 固态化学导论课程节选

  • This makes it more difficult for the body to effectively use the same amount of oxygen as it would on the ground.

    VOA: special.2009.07.14

  • You burn methane, and it combines with oxygen to form water, to form CO2.


    麻省理工公开课 - 热力学与动力学课程节选

  • The deformed cells block blood vessels and cut off the flow of oxygen to tissue in the body.

    VOA: special.2009.12.16

  • The respiratory system plays an important role in maintaining our internal environment at the proper level of oxygen, by bringing the right amount in.


    耶鲁公开课 - 生物医学工程探索课程节选

  • The result is a five to twenty percent drop in the amount of oxygen in the blood.

    VOA: special.2009.07.14

  • I mean, if the energy is lower to occupy a smaller volume, then if I have this room and a bunch of molecules of oxygen, and nitrogen and what have you in the air, and there are weak attractions between them, why don't they all just sort of glum together and find whatever volume they like.


    麻省理工公开课 - 热力学与动力学课程节选

  • It contains forms of hydrogen and oxygen that can mark, or label, these elements within body water.

    VOA: special.2011.07.27


oxygen content 氧含量,血氧含量

dissolved oxygen 溶解氧

dissolved oxygen (DO) 溶解氧

dissolved oxygen (do) 溶解氧

oxygen consumption 耗氧量,氧消耗

oxygen supply 供氧;氧源

oxygen demand 需氧量

hyperbaric oxygen 高压氧

oxygen saturation 氧饱和;氧饱和度

active oxygen 活性氧

oxygen index [化]氧指数;示氧值

chemical oxygen demand (cod) 化学需氧量

chemical oxygen demand (COD) 化学需氧量

chemical oxygen demand 化学需氧量,化学氧需求量

oxygen sensor 氧传感器

pure oxygen 纯氧

oxygen therapy 氧疗法;氧气治疗

oxygen enrichment 富氧

oxygen lance 氧气喷枪

oxygen bar 氧气吧

- 来自原声例句

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进来说说原因吧 确定