您要查找的是不是：
- 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。
- Nitrogen accretion 氮增加量
- 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?
- The dictionary includes the newest accretion to the language. 字典中包括语言中出现的最新词语。
- 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。
- A peptide hormone, produced by the thyroid gland in human beings, that lowers plasma calcium and phosphate levels without augmenting calcium accretion. 降钙素一种缩氨酸荷尔蒙，由人体内的甲状腺产生。在不增加钙含量的情况下，可降低血中钙和磷酸盐的含量
- SONGPAN-GANZE BELT: FOREARC ACCRETION OR BACKARC COLLAPSING? 松潘-甘孜带:是弧前增生还是弧后消减?
- The steep inclined accretion bedding may exist near front margin. 前缘可具向外陡倾的加积层理。
- Nitrogen forms about four-fifths of the atmosphere. 氮约佔大气的五分之四。
- SONGPAN-GANZE BELT:FOREARC ACCRETION OR BACKARC COLLAPSING? 松潘-甘孜带:是弧前增生还是弧后消减?
- What is the content of the crude nitrogen. 污氮的含氧量是多少?
- Easy to operate, store jerrican accretion,reduce the labor density. 操作方便，贮油桶油量增大，减少操作者劳动密度。
