柱前 meaning in English

precolumn

Techniques of pre - column derivatization in amino acid analysis
氨基酸分析中的柱前衍生技术
Determination of neomycin sulfate by opa pre - column derivatization
柱前衍生法测定硫酸新霉素的含量
Determine amino acid contents with opa - fmoc pre - column derivatization rp - hplc
柱前衍生反相液相色谱法测定氨基酸含量
Determination of 5 penicillins in milk by hplc with pre column derivatization
测定牛奶中5种青霉素残留量的高效液相色谱柱前衍生法
Determination of amino acids in pearl shell by rp - hplc with opa pre - column derivatization
邻苯二甲醛柱前衍生反相高效液相色谱法测定珍珠母中氨基酸

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