平滑化

pínghuáhuà

to smoothen

Wiktionary

Entry Composition

1 平滑 pínghuá flat and smooth
=2 化 huā variant of 花 huā
=2 化 huà
  1. to make into
  2. to change into
  3. -ization
  4. to ... -ize
  5. to transform
  6. abbr. for 化學 huàxué