直流电

• 十(ten; vertical)ASSOCIATIVE
• 目(eye)RADICAL
• 一(one; straight line)ASSOCIATIVE

An eye looking straight down one line without deviation is what makes something upright and straightforward.

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

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

• 曰(speak; bright cloud)ASSOCIATIVE
• 乚(lightning bolt; hook stroke (downward))ASSOCIATIVE

A flash of lightning bursts bright through the clouds—that is electricity itself!