- spiral; spire; helix (旋); helical; spiral curve
- 倒螺线: reciprocal spiral
- 螺线板: spiral rule
- 螺线齿: helical tooth
- 螺线的: helical; spiral
- 螺线管: solenoid; solenoid coil; actuator; helitron; helix; spiratron; electric solenoid; follow-up coil
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