【答案】应助回帖

3楼: Originally posted by 我心飞翔1534 at 2013-12-07 22:42:36
亲水性材料有大的接触角contact angles（大于135度），和小的滚动角roll-off angles.
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2楼: Originally posted by caominone at 2013-12-06 20:19:12
水的接触角能够表征材料的亲水性，粗糙度越高，亲水性越强。