1) natural acid
天然酸
1.
When the product was acidified by natural acid such as lactic acid, citric acid, malic acid and tartarica acid, the solubility of the product in water increased greatly and cationic surfactant aqueous solution was got, and the pH of the acidic aqueous solution .
将产品与一系列的天然酸复配,使其在水中的溶解度大大增加,得到pH为6—7刺激性低的水溶液,并对溶液的表面性质进行了测定。
2) natural phenolic acid
天然酚酸
1.
A new method using gradient elution of reversed phase high performance liquid chromatography was set up for the separation and determination of 12 natural phenolic acids simultaneously.
采用反相高效液相色谱法梯度洗脱 ,对 12种天然酚酸进行定性定量分析研究。
3) natural boric acid
天然硼酸
4) natural phosphates
天然磷酸酯
5) sour natural gas
酸性天然气
1.
Hydrate formation conditions of (CH_4+CO_2+H_2S) ternary sour natural gases;
含(CH_4+CO_2+H_2S)酸性天然气水合物形成条件实验与计算
2.
This worldwide well-known standard was widely accepted as the guidelines in steel materials selection for sour natural gas environment.
这是一个在世界范围内得到普遍接受和实际应用的指导酸性油气田开发材质选择的标准,对我国从事酸性天然气开发的同行同样具有重要作用。
3.
With a large number of developing sour natural gas fields at home and abroad in recent years,many researchers take extra attention to prevenl hydrate plugging problems.
甲醇、乙二醇等传统热力学抑制剂有毒、药剂用量大,会产生大量酸性污水难于处理,不能完全满足防止高含硫酸性天然气水合物形成的需要。
补充资料：石油天然气国际贸易(见石油市场与天然气市场)
石油天然气国际贸易(见石油市场与天然气市场)
石油天然气国际贸易(internotional tradeof011 and只as)见石油市场与天然气市场。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条