selective trace的例句大全

Development of the Simple Method with Combined LB Film for Selective Detection of Trace Cadmium in Water

LB复合膜选择性检测水中痕量镉离子的方法研究

The trace sulfur hexafluoride in high pure nitrogen trifluoride gas was determin by selective ion monitor ( SIM) mode.

用选择离子监测（SIM）方式测定了高纯三氟化氮（NF3）气体中痕量六氟化硫（SF6）。

Determination of Trace Silver by Catalytic Method with CN Ion Selective Electrode

离子选择性电极动力学分析法测定银

it was studied that the new indicative reaction which copper(ⅱ) catalyzes ascorbic acid to reduce methyl red in citric acid medium. apparent activation energy was determined and a new method highly selective, catalytic spectrophotometry for the determination of trace copper(ⅱ) was established.

本文研究了在柠檬酸介质中，铜催化抗坏血酸还原甲基红的新指示反应及动力学条件，并测定了反应的活化能，建立了高选择性测定痕量铜的新方法。

selective enrichment and direct determination of trace drug by solid-phase extraction

固相萃取法对微量药物的选择性富集和直接测定

Determination of Trace Cyanide Ion in waste water by Using of Ion Selective Electrode

离子选择电极法测定污水中微量氰根