carbon dioxide 中文
EN中二氧化碳 维二氧化碳
- 二氧化碳(IUPAC名:carbon dioxide,分子式:CO2)是空氣中常見的化合物,由两个氧原子与一个碳原子通过共价键连接而成。空氣中有微量的二氧化碳,約佔0.04%。二氧化碳略溶於水中,形成碳酸,碳酸是一種弱酸。
- 在二氧化碳分子中,碳原子的成键方式是sp杂化轨道与氧原子成键。碳原子的两个sp杂化轨道分别与两个氧原子生成两个σ键。碳原子上两个没有参加杂化(混成)的p轨道与成键的sp杂化轨道成90°的直角,并同氧原子的p轨道分别发生重叠,故缩短了碳氧键的间距。
- 二氧化碳平均约占大气体积的400ppm,不過每年因為人為的排放增加,比率還在逐步上升。大气中的二氧化碳含量随季节变化,这主要是由于植物生长的季节性变化而导致的。


- 名词 (Noun)PREcarbo-SUF-ide
- (inorganic chemistry) The normal oxide of carbon, CO2; a colorless, odorless gas formed during respiration and combustion and consumed by plants during photosynthesis.
- Oxygen levels on Earth skyrocketed 2.4 billion years ago, when cyanobacteria evolved photosynthesis: the ability to convert water and carbon dioxide into carbohydrates and waste oxygen using solar energy.
- (inorganic chemistry) The normal oxide of carbon, CO2; a colorless, odorless gas formed during respiration and combustion and consumed by plants during photosynthesis.
- 更多范例
- 用于句中
- Eyelid specific treatments for hidrocystomas have included carbon dioxide vaporization, electrosurgery, hyfrecation, botulinum toxin, and intralesional tricholoroacetic acid injection.
- Sandy is a full-fledged club sodaholic and drinks about a liter a day. We wonder whether the physiological effects of carbon dioxide might be responsible for the great popularity of carbonated drinks.
- The logistics company will geosequester carbon dioxide to offset its carbon footprint.
- 用于句中
Definition of carbon dioxide in English Dictionary
- 词类阶层 (Part-of-Speech Hierarchy)
- 名词
- 单数形态
- 不可数名词
- 不可数名词
- 单数形态
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资料来源: 维基词典