Correct

蜗轮

/ wō lún / 
Strokes

Example

As a Noun

worm gear/wheel

1
Wōlún
蜗轮
chuándòng
传动

worm gearing

2
Wōlún
蜗轮
xiāng
箱

worm case

3
Wōlún
蜗轮
jiǎnsùjī
减速机

worm-gear speed redcucer

4
Wōlún
蜗轮
jiāgōng
加工

worm wheel cutting

5
Wōlún
蜗轮
gǔnchǐjī
滚齿机

worm-gear hobbing machine