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- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- nitrogen hydrate 氮气水合物
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- Chloral hydrate is a rapidly effective hypnotic. 水合氯醛为一种作用迅速的催眠药。
- Shea &Rose Hip gently hydrate &add gloss. 玫瑰果籽及雪亚脂令你的头发水泽光滑。
- Will you sunder nitrogen from air? 你能从空气中把氮气分离出来吗?
- Natural Gas Hydrate: the savior of energy crises? 可燃冰:能源危机的拯救者?
- Methane Hydrate - an alternative fuel source? 甲烷水合物-替代燃料来源?
- Nitrogen is the most commonly used gas. 氮气是最常用的气体。
- Sample gas tubes are flushed with nitrogen. 采气管得用氮气吹扫。
- The main reservoir of nitrogen is the atmosphere. 氮的主要蓄存库是大气层。
- What is the percentage of nitrogen in air? 空气中所含的氮的比例是多少?
- Fast neutrons are also captured by nitrogen. 快中子也可以被氮吸收。
- Nitrogen forms four-fifths of the atmosphere. 氮气占空气的五分之四。
- Gas hydrate is a kind of ice-like clathrate hydrate. 摘要气体水合物是一类笼形结构的冰状晶体。
- Nitrogen forms about four-fifths of the atmosphere. 氮约佔大气的五分之四。
- Add 25 ppb Bentonite and allow to hydrate for a minimum of 6 hrs. 按每桶钻井液加25磅的膨润土，允许水化至少6个小时。
- What is the content of the crude nitrogen. 污氮的含氧量是多少?
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
