Việt
Bánh răng cong.
Anh
helical gears
cylindrical gears
spur gears
Đức
Stirnradgetriebe
Pháp
engrenage cylindrique
cylindrical gears,helical gears,spur gears /ENG-MECHANICAL/
[DE] Stirnradgetriebe
[EN] cylindrical gears; helical gears; spur gears
[FR] engrenage cylindrique