If a lens is too small, the defoamer activity is reducedbecause time must be given for the foam to drainsufficiently for the lens in the plateau border to bridgeneighboring bubbles.

• 如果透镜太小，那么消泡剂的活性就降低，因为对于在帕拉图边界的透镜来说，泡沫要充分耗尽，以桥接相邻的气泡必须给予时间。