radius

n. 半徑、範圍、輻射光線

學術名詞

• 半徑：數學、機械工程、力學、天文學、地球科學、物理學
• 橈骨：動物學、醫學、比較解剖學、畜牧學、舞蹈、電子工程
• 蜿曲度：地質學、醫學
• 鰭輻骨：動物學
• 輻狀鰭條：動物學
• 體輻：動物學
• 輻板：動物學
• 輻射線：動物學

英文釋義

1. the length of a line segment between the center and circumference of a circle or sphere
2. a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)
3. a circular region whose area is indicated by the length of its radius
4. the outer and slightly shorter of the two bones of the human forearm