If the theory was correct, breathing air with extra carbon dioxide should have triggered yawning, while breathing pure oxygen should have suppressed yawning.
如果这个理论是正确的，那么吸入含有额外二氧化碳的空气应该会引起打哈欠，而吸入纯氧应该可以抑制打哈欠。
Volunteers were told to think about yawning while they breathed either normal air, pure oxygen, or an air mixture with an above-normal level of carbon dioxide.
当志愿者在正常的空气中、纯氧的环境下，或者混有超过正常的二氧化碳含量的空气中呼吸时，他们被要求要想着打哈欠。
Volunteers were told to think about yawning, while they breathed either normal air, pure oxygen, or an air mixture with an above-normal level of carbon dioxide.
当志愿者在正常的空气中、纯氧的环境下，或者混有超过正常的二氧化碳含量的空气中呼吸时，他们被要求要想着打哈欠。
The kinetics of nitrification biofilm in upflow and pure oxygen has been studied.
对上向流直接供氧生物膜硝化动力学进行了试验和讨论。
When he pumped pure oxygen into subjects, for example, their frequency of yawning did not change.
当他将纯氧注入实验对象时，他们打哈欠的频率并没有发生什么变化。
Inhalation of pure oxygen at atmospheric pressure or less can cause pulmonary irritation and edema after 24 hours.
在大气压或更低气压下吸入纯氧，24小时后会导致肺刺激和水肿。
Pure oxygen combustion is of great significance for cost cutting, ener- gy conserving and glass quality improving.
对目前降低成本、节省能源、提高玻璃产质量具有很重要的意义。
Methanol synthesis by pure oxygen heat exchanging conversion is developed in China but commercialized outside China.
氧换热转化合成甲醇工艺是国内首创，并在国际上首先实现工业化。
The backpack supplies pure oxygen for the astronaut to breathe, and gets rid of the carbon dioxide he or she gives out.
背包里有氧气供航天员呼吸，并且可以排除航天员呼出的二氧化碳。
L the backpack supplies pure oxygen for the astronaut to breathe, and gets rid of the carbon dioxide he or she gives out.
背包里有氧气供航天员呼吸，并且可以排除航天员呼出的二氧化碳。
To prevent this, which underwater divers call the bends, Fournier will breathe pure oxygen for two to three hours before liftoff.
为了防止这种被潜水员称为弯曲病的病症发生，弗尔涅会在升空前呼吸2到3分钟的纯氧。
The igniting capacity of electrostatic discharge to space suits is investigated in the condition of pure oxygen and common air.
通过实验研究了在纯氧和普通大气条件下，静电放电对各种航天服的引燃能力。
Carnauba wax substitute was synthesized from paraffin and microcrystalline wax by oxidation with pure oxygen and esterification.
以石蜡、微晶蜡为原料，采用纯氧氧化、酯化工艺，合成符合天然巴西棕榈蜡指标的替代品。
When pure oxygen is inhaled at pressures greater than 2 or 3 atmospheres, a characteristic neurological syndrome can be observed.
当吸入压力大于2或3个大气压的纯氧时，可以观察到典型的神经系统症状。
In this paper, pure oxygen is used to stabilized large diameter mesophase pitch fibers, which was found to be more effective than air.
采用空气和氧气做为氧化介质对大直径中间相沥青纤维进行不熔化处理。
Hyperbaric Chambers are sometimes used to literally bombard the wound area with pure oxygen, boosting blood flow and encouraging healing.
高压氧舱有时被用来利用纯氧来精确轰击伤口感染区域，进而加强血流和促进伤口愈合。
Oxygen therapy (breathing pure oxygen through a mask for 20 minutes or more) is one of the best treatments for cluster headache and is available on prescription.
氧气疗法是治疗集束性头痛的最佳方法之(通过面罩，一次性呼吸纯氧20分钟或更长)，并且直到现在依然投入使用。
New research suggests that inhaling pure oxygen can actually harm the brain, and recommends adding carbon dioxide to the mix to preserve brain function in patients.
最新的研究表明吸入纯氧实际上能损伤大脑，在纯氧中掺入二氧化碳可以保护病人的大脑。
The feature, industrialized process, operating parameters and main equipment for the pulverized coal pressurized and pure oxygen gasification process were discussed.
论述了粉煤加压纯氧气化工艺的特点、工业化过程、生产操作参数和主要设备。
The paper introduces in detail the theory, advantage and application for pure oxygen aeration system in high concentration organic petrochemical wastewater treatment.
系统地阐述了纯氧曝气系统在高浓度有机石油化工污水处理中的作用机理、优越性及其应用。
Because of its sufficient oxygen supply and the high sludge concentration, the sealed pure oxygen aeration unit has its inherent characteristics when disposing abnormal operation.
封闭式纯氧曝气装置由于供氧充足、污泥浓度较高，在处理异常运行时有其工艺自身的特点。
After evaporation of liquid oxygen, the air-supply system will offer pure oxygen without any pollution. Instead of industry oxygen bottle and provide patients with clean respiratory oxygen.
液氧经气化后由供气系统供给无任何污染的纯氧气代替工业氧气钢瓶为医院病员提供干净的呼吸氧气。
Through calculating the balance of material and heat, the theoretical temperature of combustion of blowing tuyere in the co- injection of natural gas with pure oxygen BF process was stud-ied.
通过对物料、热量平衡的计算得出全氧高炉喷吹高氢燃气工艺风口理论燃烧温度。
The oxy-fuel firing technology used in glass furnace is a very high efficency combustion technology that in the process of glass melting air is taken place by pure oxygen to improve fuel burning.
全氧燃烧技术是在玻璃熔制过程中用纯氧代替空气作为助燃气体，与燃料进行燃烧的一种高效强化燃烧技术。
They fill the container with pure air made by evaporating liquid nitrogen and liquid oxygen, and add water vapour and some trace gases.
他们将容器充满由蒸发液态氮和液态氧得到的纯空气，再加入水蒸气和一些痕量气体。
What was happening was this: in its pure state of repeating units of one titanium and two oxygen atoms, titanium dioxide is a semiconductor.
发生的事是这样的：在纯净的一个钛和两个氧原子组成的重复单位下，二氧化钛是一种半导体。
What was happening was this: in its pure state of repeating units of one titanium and two oxygen atoms, titanium dioxide is a semiconductor.
发生的事是这样的：在纯净的一个钛和两个氧原子组成的重复单位下，二氧化钛是一种半导体。
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