Check oxygen concentration by a refractometer.
用折射仪测量一下氧气的浓度。
This paper introduces the principle of ZrO 2 oxygen concentration cell.
文中介绍了氧化锆氧浓差电池的工作原理。
Study in the effect of the dissolve oxygen concentration in aerobic zone on the reactor.
好氧区溶解氧浓度对反应器处理效果影响的研究。
To explore the control method of oxygen concentration in the atmosphere compression chamber.
探讨空气加压舱舱内氧浓度的控制。
The reaction rate is limited by the concentration gradient of oxygen in the sample.
反应速率受试样中氧浓度梯度的限制。
A. sitting the patient up; giving high-concentration oxygen by non-rebreather mask.
让病患坐立，并用非再吸入面罩给予高浓度氧气。
The air negative oxygen ion concentration is the sign of fresh air or not.
空气中负氧离子浓度是空气清新与否的标志。
The air negative oxygen ion concentration is the sign of fresh air or not.
空气中负氧离子浓度是空气清新与否的标志。
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