名词氮；氮气网络液氮；含氮；氮含量
名词
1. Nitrogen forms about 78% of the earth's atmosphere.
氮约占地球大气的百分之七十八。
1. 氮气：我司生产销售变压吸附(PSA)制氮机.制氮机配有空气缓冲罐,氮气缓冲罐.还配有两个吸附塔,双吸附塔并联交替进行吸附,一塔工作一塔再生,连续产氮. 压缩空气(AIR) 氧气(OXYGEN)放空 氮气(NITROGEN)收集 .规格多种多样,欢迎来电咨询.
2. 氮元素：H-1含碳量极低,以氮元素(Nitrogen)代替大部分的碳,因此生锈的主因就是钢铁中的碳遇水成为氧化物. 使用氮元素同时可保有绝佳硬度与韧渡. Spyderco水中救援刀,长久以来就深受航海员、急救人员的喜爱,现在更加强了其防锈能力,
3. 总氮：Nitrite 亚硝酸盐 | Nitrogen 总氮 | Oxygen 溶解氧
1. 氮;氮气
Nitrogen is a colourless element that has no smell and is usually found as a gas. It forms about 78% of the earth's atmosphere, and is found in all living things.
1. 氮;氮气
Nitrogen is a colourless element that has no smell and is usually found as a gas. It forms about 78% of the earth's atmosphere, and is found in all living things.