不同氧浓度微环境对大鼠骨髓间充质干细胞成骨及成脂肪分化的影响 关键词：间充质千细胞；氧浓度；微环境；分化 [gap=2026]Key words：BMSCs，oxygen concentration，microenvironment，differentiation
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...保护,缝隙腐蚀,扰动,氧含量,PH值 [gap=773]Keywords: cathodic protection,crevice corrosion,agitation,oxygen concentration,PH value ...
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critical dissolved oxygen concentration 临界溶氧浓度
oxygen concentration cell 氧浓差电池 ; 成氧浓淡电池
oxygen concentration corrosion 氧气集中腐蚀 ; 氧集中腐融
oxygen concentration monitor 氧气浓度监控器
minimum lethal oxygen concentration 最低致死浓度
Dissolved Oxygen concentration Control 溶解氧浓度控制
oxygen-concentration cell corrosion 氧浓差电池腐蚀
Volumetric gas rate was another parameter except the factors of reactor's structure, which impacted on the oxygen concentration in the bulk water and inner circle velocity.
当反应器结构确定后，进气量是影响反应器性能的一个重要因素：进气量的大小决定了液相中的氧浓度，控制进气量可以实现控制内循环速度的目的，从而控制载体上的生物膜厚度。
参考来源 - 三相内循环生物流化床处理生活污水的研究EGR (Exhaust Gas Recirculation) introduces part of exhaust into cylinder, due to reduced oxygen concentration and combustion temperature, generation of NOx is constrained.
EGR技术（Exhaust Gas Recirculation）将一部分废气重新引入气缸，降低了氧浓度和燃烧温度，抑制了NOx的生成，现在已经成为改善排放的一个有效手段。
参考来源 - EGR对汽油机排放和性能影响的研究And the oxygen concentration on the two ullage volume under the condition that the pressure is changing and fuel depletion was tested.
降压过程和燃油消耗条件下,使用富氮气体冲刷条件下氧气浓度。
参考来源 - 飞机燃油箱氮气惰化系统性能研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Check oxygen concentration by a refractometer.
用折射仪测量一下氧气的浓度。
But while bears were inside, researchers checked the oxygen concentration to track metabolic rate.
不过当熊在盒子里面的时候，研究人员就能检查氧气浓度，从而追踪新陈代谢率。
Oxygen sag — a point of low dissolved oxygen concentration generally located around effluent injection points.
氧松弛——低溶点氧通常集中位于污水注入点附近。
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