流线型

• 氵(water)RADICAL
• 㐬(swirling flow; whirlpool)PHONETIC

Water flowing in a whirlpool becomes a stream, which is the circulation of water.

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

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

• 刑(punishment; cut; mold; pattern)PHONO-SEMANTIC
• 土(earth; mold)RADICAL

A mold is a frame of earth shaped and cut into a definite form.