active acidity的例句大全

1.1 soil active acidity

1对土壤活性酸的影响

The third class was soil intensity index of active acidity ( pH ( H 2 O ) ).

第三类是土壤活性酸强度指标 ( pH ( H2O ) ).

two better ones out of seven supported catalysts were selected for carbonylation of ethyl alcohol. factors effecting the conversion and selectivity for the reaction have been studied and the valence state of active species and the acidity of carrier have also been examined.

本文由七种负载型催化剂中选出两种比较好的乙醇羰化催化剂，研究了影响反应转化率和选择性的因素，考察了活性组份的价态和载体的酸性。

surface active agents. determination of free alkalinity or free acidity. titrimetric method.

表面活性剂.游离碱度或游离酸度的测定.滴定法

analysis of surface active agents (raw materials) - general methods - method for determination of free alkalinity or free acidity

表面活性剂（原料）的分析.一般方法.游离碱度或游离酸度的测定方法

the active ingredient content in film-forming solution and the film thickness were tested by spectrophotography, and the total acidity of the solution was detected by lung's indicator.

采用分光光度法测定了涂膜液中活性成分的含量、膜层厚度，采用指示剂法测定了涂膜液的总酸度。