角かく度ど幅はば

noun

angular width; angle width

Technical term used in physics and optics to describe the angular extent of an object or beam.

• このレンズの角かく度ど幅はばは狭せまいので、広ひろい範はん囲いを一いち度どに観かん測そくできない。

  The angular width of this lens is narrow, so it cannot observe a wide area at once.

• 天てん体たいの角かく度ど幅はばを測そく定ていするには、専せん用ようの機き器きが必ひつ要ようだ。

  Specialized equipment is needed to measure the angular width of celestial bodies.