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- TPD results show that the concentration of oxygen at the sueface is associated with catalytic activity. TPD测试表明催化剂的表面氧浓度对催剂的催化活性有一定的影响。
- The actual flue gas volume and the concentration of oxygen is inversely proportional,and excess air coefficient is proportional. 而实际烟气量与氧浓度成反比,与过剩空气系数成正比。
- Hydrogen gas is odorless and nontoxic but may induce suffocation by diluting the concentration of oxygen in air below levels necessary to support life. 氢是无嗅无毒的，但通过把空气中氧的浓度稀释到维持生命所必须的水平以下，氢可以引起窒息。
- Measuring the concentration of dissolved oxygen in an aqueous environment and analyzing the availability of oxygen in waterways exposed to typical pollutants. 在水环境中测定溶解氧的浓度并分析排水沟中溶解氧量可能受到哪些典型的污染物所影响。
- Hydrogen gas is odorless and nontoxic but may produce suffocation by diluting the concentration of oxygen in air below levels necessary to support life. 氢是无嗅无毒的，但通过把空气中氧的浓度稀释到维持生命所必须的水平以下，氢可以引起窒息。
- Using Charged Particle Activation Analysis (CPAA), the concentration of oxygen in a thin boron target was determined, and the method of analyzing the thin unknown sample in comparison with the thick standard was studied. 应用带电粒子活化分析法(CPAA)对硼薄膜中的氧含量进行了测量,并对利用厚标样分析薄样品中的元素含量的比较测量方法进行了研究。
- There was a shortage of oxygen at the top of the mountain. 山顶上缺氧。
- There is a concentration of people in big cities. 大城市人口集中。
- Many fruits withstand storage under controlled concentrations of oxygen, carbon dioxide and nitrogen which are detrimental to quarantine insect pests. 多种水果能够在对检疫性害虫致命的受到控制的氧、二氧化碳和氮浓度下储藏。
- A molecule of water consists of two atoms of hydrogen and one atom of oxygen. 水分子含有两个氢原子和一个氧原子。
- Water is made up of oxygen and hydrogen. 水是由氢和氧构成的。
- Water is said to consist of oxygen and hydrogen. 据说水由氢气和氧合成。
- Water is said to consist of oxygen and hydrogen . 据说水由氢气和氧合成。
- The relative concentrations of oxygen and carbon dioxide in the surrounding air determine the balance of photosynthesis and photorespiration and thus the efficiency of carbon fixation . 环境中氧气和二氧化碳的相对含量决定了光合合成和光呼吸的反应平衡和二氧化碳固定的效率。
- Water is the compound of oxygen and hydrogen. 水是氢氧化合物。
- What is the concentration of salt in sea water? 海水中盐的含量是多少?
- The active ozone is a slightly ionic form of a bent array of oxygen atoms. 活泼的臭氧是氧原子横向排列的微电离型。
- Water is composed of oxygen and hydrogen. 水是由氧与氢组成。
- S is the concentration of unpaired nucleotides. S是不配对的核苷酸的浓度。
- Water consists of oxygen and hydrogen. 水由氧和氢组成。
