Correct

螺旋

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Strokes

Definition

spiral/helix/screw

Example

As a Noun

spiral; helix

1
Luóxuán
螺旋
tiānxiàn
天线

helix/helical antenna

As a Noun

screw

2
Yòu
右
  
/
zuǒ
左
luóxuán
螺旋

right-handed/left-handed screw

3
Yīnluóxuán
阴螺旋

internal/female screw

4
Yáng
阳
luóxuán
螺旋

external/male screw