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1)  super lower nitric acid
超低浓度硝酸
1.
Through the discussion on brass pickling processes,a new technology of super lower nitric acid is put forward to replace the conventional sulfuric acid-hydrogen peroxide process.
通过对黄铜酸洗工艺的讨论,采用了超低浓度硝酸新工艺代替硫酸-双氧水体系的老工艺。
2)  the concentration of nitric acid
硝酸浓度
1.
In order to solve the problems encountered in determination of Fe,Mn,Ni,Cu and Zn by FAAS method,the effect of the concentration of nitric acid and the integrated time on determination results was studied in this paper.
针对火焰原子吸收法测定铁、锰、镍、铜和锌时遇到的问题,考察了溶液中硝酸浓度及积分时间对测定结果的影响,发现保持标准系列与被测样品中的硝酸浓度一致有利于提高分析结果的准确性;采用5 s的积分时间可提高测定铁和镍的准确度和精密度。
3)  ultra-low concentration
超低浓度
1.
An ultra-low concentration copper pyrophosphate electrolyte for preliminary copper plating,which contained 0.
依据电位活化理论,研究了超低浓度焦磷酸铜预镀铜电解液,其组成为:0。
4)  Fe(NO3)3 concentrations
硝酸铁浓度
5)  nitrate concentration
硝酸盐浓度
1.
By controlling the nitrate concentration in the anoxic stage,the methods and effects of inducing Denitrifying Phosphate Accumulating Organisms(DNPAOs) were studied.
通过控制缺氧段硝酸盐浓度,研究了反硝化聚磷菌的诱导方法及效果。
6)  KNO_3 concentration
硝酸钾浓度
1.
reticulata under different KNO_3 concentrations were studied.
研究了不同硝酸钾浓度对蔷薇藻生长代谢的影响,分析测定蔷薇藻比生长速率、胞外多糖产量、藻蓝蛋白含量、色素含量、硝酸还原酶活性和SOD活性等参数。
补充资料:超低界面张力
分子式:
CAS号:

性质:关于油水体系界面张力,一般把10-1到10-3mN/m算作低界面张力,将10-3mN/m以下的称超低界面张力。超低界面张力在第三次采油中具有重要意义。研究表明,在注水驱油中,如果使界面张力降低三个数量级,就可以使地层残油体积减少一半,若能使界面张力降低四个数量级,理论的驱油率可达100%。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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