external reference method

• 外标法

external reference method的用法和样例：

例句

1. A quantitative analytical method was established for fomesafen by using reversed phase HPLC.
   采用高效液相色谱外标法对氟磺胺醚进行定量。
2. When, however, there is a strong interaction between them, the ISTD method gives better results than the ESTD method.
   当物质之间有强的相互作用时，外标法比内标法准确。