测地线曲率

• 氵(water; liquid)RADICAL
• 则(rule; standard)PHONO-SEMANTIC

Measuring water flow requires standard rules and methods.

• 土(earth; soil; land)RADICAL
• 也(also; punctuation mark (archaic))PHONETIC

The wide earth (soil) is also where all things flourish and grow.

• 糸(thread; silk)RADICAL
• 泉(stream; water)PHONETIC

A thin thread flows like a small stream running long and continuously.

• 曰(mouth open; speak)RADICAL
• 丨丨(two vertical strokes indicating a curve)ASSOCIATIVE

The character 曲 shows a vessel's mouth with two curved walls, evoking the image of a bent and winding elbow.

• 亠(pointed head; tip)ASSOCIATIVE
• 幺(small thread; fine silk)ASSOCIATIVE
• 十(ten; complete)ASSOCIATIVE

A leader (lid shape) pulls together many small threads (tiny lines) into one knot (cross), symbolizing unified guidance.