我想弱弱的问一下做过全身毒性的专家或者对美国药典第88章很熟悉的专家,试样制备过程中有这样一段话“place the sample into a clean,glass-stoppered,100-mL graduated cylinder of Type Ⅰ glass,and add about 70mL of water for injection.Agitate for about 30 seconds, and drain off the water, repeat this step, and dry those pieces prepared for the extraction with Vegetable Oil in an oven at a temperature not exceeding 50”对于后面红色字体的那部分,我不是很理解,用植物油干燥试样?是这样吗,但是如果是的话,我想不通,麻烦专业人士帮我解答一下,不甚感激。