Case studies are an integral part of knowledge cumulation. 案例研究是知识累积的主要部分。
A regional association contributing to the comprehensive regional economic integration of its members may be granted GSP cumulation benefits. 加入综合区域经济集团成员国的区域性联盟，可得到普惠制的累积优惠额。
Cumulation in each sample plot was a little different with the annual litter production. 各样地的蓄积量多少与年凋落量有一些差异。
