英语语法分析

By using sulpho acid to dissociate samples, using spectrophotometric method to determine micro-chrome in drainage sedimentary is very easy and simple with low cost.

采用王水分解样品，分光光度法测定水系沉积物样品中微量铬，方法简便，易操作，成本低。

If best analysing condition of each element is deter mined, As, Sb, Bi, Hg and Se in agricultural geology samples can be determined continuously in sulpho acid medium.

确定了各元素的最佳分析条件，可在王水介质中连续测定农业地质调查样品中的砷、锑、铋、汞、硒。