● Ukufunxa kakuhle luphawu olubalulekileyo. Ezinye zazo ziimpompo zoxinzelelo oluphantsi kunye nokukhutshwa okuphantsi, ngelixa ezinye zikwazi ukuvelisa amazinga aphezulu okuhamba, kuxhomekeke kwi-diaphragm yokusebenza esebenzayo ububanzi kunye nobude be-stroke. Banokusebenza kunye nenani eliphezulu ...
Funda ngokugqithisileyo