They then took a bag from each area and sorted it into different material types, to give a representative sample of the type of waste that the school produces.
他们从每处提取一个袋子然后把它进行类别分类，这样可展示学校生产的有代表性的垃圾样品。
2
Two alligator clips on the end will hold a variety of bag sizes, making sample collection easy and fast.
柄端两个鳄鱼夹可以配合使用多种尺寸的无菌取样袋子，使样品收集更容易，更快速。
3
Above, remove the light minerals and the heavy minerals, rinse with alcohol after drying, weighing, place the sample in the bag. If you find it you call her at.