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Radius
01
半径
the length of a straight line drawn from the center of a circle to any point on its outer boundary
02
半径
support consisting of a radial member of a wheel joining the hub to the rim
03
半径
a circular region whose area is indicated by the length of its radius
04
半径
a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)
05
橈骨
(anatomy) the larger and thicker bone of the human forearm extending from the elbow to the thumb side of the wrist
What is "radius"?
The radius is one of the two bones in the lower arm, along with the ulna. The radius plays a crucial role in forearm rotation and wrist movement, allowing for supination and pronation of the hand. It also supports the muscles of the forearm and provides attachment points for ligaments and tendons involved in arm and hand movements. The radius's position and structure contribute to the overall strength and stability of the arm, enabling a wide range of activities such as lifting, gripping, and manipulating objects with precision.
例
The radius of a planet determines its gravitational influence and orbital characteristics within a solar system.
The architect calculated the radius of the dome to ensure its proportions were aesthetically pleasing.
The radius of a circle is half the length of its diameter, extending from the center to any point on the circumference.
A compass is a tool used to draw circles, with the radius adjusted to the desired measurement.
The strength of gravity on the surface of a planet depends on its mass and radius.
