The determination of tetramine and fluoroacetamide using GC - MS method unknown sample was discribed in this paper.本文采用GC -MS 法测定杀鼠剂产品中是否含有毒鼠强及氟乙酰胺,其方法准确、迅速、可操作性强.Objective To study clinical the clinical date of manifest...
She was feeding documents into a paper shredder.她将文件放入碎纸机。She tried to sell me the idea of buying my own paper shredder.她努力说服我买一台自己的碎纸机。Everybody's attitude was,'We've got to have a shredder.'所有人都觉得, ...