Qhov tseem ceeb npaum li cas yog qhov zoo tshaj ntawm cov chromatographic piv kuaj ua piv
Yog tias tsis tswj kev ua siab ntev, tsis siv neeg phab ntsa yuav txawv, nws yuav cuam tshuam rau cov qauv ntawm lub fwj, tus zaj yog qhov tseem ceeb heev rau qee qhov hnoos qeev me me