About
弧 is a phono-semantic compound, with the left semantic radical 弓 (bow) indicating its original meaning as a weapon, and the right phonetic component 瓜 (melon) providing the sound. The character's meaning evolved from the concrete wooden bow to the geometric shape of a bent bow, referring to a curve or arc. In modern usage, it primarily denotes a curved line, an electrical arc, or a segment of a circle, marking a shift from a physical object to a mathematical descriptor.
Etymology Hide
Example Sentences Hide
这是一个圆弧。
他画了一个弧形。
彩虹的形状是弧形的。
飞机在天空划出一道弧线。
电工正在修理电弧炉。
这幅画中的弧形构图很巧妙。
在几何学中，弧是圆的一部分。
通过计算，我们确定了最优发射弧线。