摩ま擦さつ角かく

noun

angle of friction; frictional angle

Technical term in physics and engineering; the angle at which an object begins to slide on an inclined plane due to friction.

• 摩ま擦さつ角かくは、物ぶっ体たいが滑すべり始はじめる斜しゃ面めんの角かく度どとして定てい義ぎされる。

  The angle of friction is defined as the angle of an inclined plane at which an object begins to slide.