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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。
- Citrate nitrogen 硝态氮
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- Will you sunder nitrogen from air? 你能从空气中把氮气分离出来吗?
- 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。
- Methods: The Sodium Citrate be used ases the Defloculating agents. 方法:加入枸橼酸钠作为反絮凝剂。
- Nitrogen forms four-fifths of the atmosphere. 氮气占空气的五分之四。
- The other well-known regenerative process is citrate process. 另一种广为人知的再生法是柠檬酸法。
- The buffering action of citrate maintains the pH in the range 3. 柠檬酸的缓冲作用使得体系的ph值维持在3.;5-5
- Calcium citrate malate is more suitable for achlorhydria. 果酸钙更适合于胃酸缺乏的人群补钙。
- Nitrogen forms about four-fifths of the atmosphere. 氮约佔大气的五分之四。
- Tributyl citrate is a new material of non-toxic plasticizer. 摘要柠檬酸三丁酯是一种新型无毒增塑剂。
- What is the content of the crude nitrogen. 污氮的含氧量是多少?
- The precision of new citrate lyase method has been testified. 2. 2.;柠檬酸碳酸氢盐透析液干粉是安全性可靠的。
