DICT.TW Dictionary Taiwan

 angular aperture 名詞
 透鏡角孔徑,角孔徑

 An·gu·lar a.
 1. Relating to an angle or to angles; having an angle or angles; forming an angle or corner; sharp-cornered; pointed; as, an angular figure.
 2. Measured by an angle; as, angular distance.
 3. Fig.: Lean; lank; raw-boned; ungraceful; sharp and stiff in character; as, remarkably angular in his habits and appearance; an angular female.
 Angular aperture, Angular distance. See Aperture, Distance.
 Angular motion, the motion of a body about a fixed point or fixed axis, as of a planet or pendulum. It is equal to the angle passed over at the point or axis by a line drawn to the body.
 Angular point, the point at which the sides of the angle meet; the vertex.
 Angular velocity, the ratio of anuglar motion to the time employed in describing.