逃にげ溝みぞ

noun

clearance groove; undercut

Technical term in machining and engineering: a groove cut to provide clearance for a tool or mating part, or to relieve stress.

• この部ぶ品ひんには逃にげ溝みぞが必ひつ要ようです。

  This part requires a clearance groove.

• 逃にげ溝みぞの寸すん法ぽうを図ず面めんに記き入にゅうしてください。

  Please indicate the dimensions of the undercut on the drawing.