1·He found that about 563 metric tons of nitrogen trifluoride was emitted in 2006.
他发现2006年中有大约563公吨的三氟化氮被排放。
2·Some companies are solving the problem by adopting alternatives to nitrogen trifluoride.
一些公司选择了接受三氟化氮的替代品来解决这个问题。
3·Air Products claims that worldwide production of nitrogen trifluoride has reached 7, 300 metric tons.
空气化工产品公司宣称全球的三氟化氮产量已经达到7300公吨。
4·Prather says we should now be following nitrogen trifluoride concentrations in the atmosphere closely.
普莱瑟说我们现在应当密切关注大气中的三氟化氮含量。
5·Nitrogen trifluoride (NF3) is a toxic, colorless, odorless, nonflammable, oxidizing compressed gas.
三氟化氮(NF 3)是有毒、无色、无嗅、不可燃的氧化性压缩气体。
6·The concentration of nitrogen trifluoride in the atmosphere is about 0.5 part per trillion, making it very hard to measure.
大气中三氟化氮的浓度大约为0.5万亿分之一(ppt)，使得它很难测定。
7·Nitrogen trifluoride (NF3) is used mainly by the semiconductor industry to clean the Chambers in which silicon chips are made.
三氟化氮(NF 3)主要被半导体工业用于清洗制造硅芯片的工作舱。
8·Productivity, production technique and purification methods of nitrogen trifluoride are introduced at home and abroad, while the domestic and foreign market of it is analyzed and forecasted.
介绍了国内外三氟化氮的产能、制备技术及纯化方法，同时对国内外三氟化氮市场进行了分析和预测。
9·But the first-ever measurements of nitrogen trifluoride levels in the atmosphere, published recently in the journal Geophysical Research Letters show that emissions could be as high as 16 percent.
但对大气中三氟化氮含量的首次测量，最近发表在《地球物理学研究通讯》(Geophysical research letters)，揭示出其排放量可高达16%。