pilling effect

• 起球现象

pilling effect的用法和样例：

例句

1. Pilling is the formation of small balls of fiber and other contaminants, called...lls, which are held to the surface of cloth by anchoring fibers.
   由纤维和其它粘染物形成的小绒球依靠纤维的联接粘附在织物表面的现象称为起球现象。