tractional การใช้

The activity of the muscles of the upper back will provide healthy tractional stimulus to the vertebrae.
It gives a driver the best tractional relationship between the vehicle and the road surface in a variety of driving situations.
We have lived for decades in peace with the Kurds here, " said Yassin, wearing a tractional red and white Arab head dress.
By contrast, a locked differential forces both left and right wheels on the same axle to rotate at the same speed under nearly all circumstances, without regard to tractional differences seen at either wheel.
The distinction is that, in a normal river or stream bed, particles of rock are carried along by frictional drag of water on the particle ( known as " tractional flow " ).