Cov kev siv ntawm koj cov menyuam los yog chains tsav muaj khoom yog ib qho nyob rau hauv yuav luag txhua txhua kev lag luam. Sauv rov qab daim ntawm cov khoom ntawm tag nrho cov ntau thiab tsawg pab yog ua siv ib yam ntawm cov tsav technologies. Tsis txhob tsav siv elongation yog qhov tseem ceeb nrog tej siv los yog tej saw uas tau tsav cov khoom. The use of pulleys and belts or chains and sprockets to… nyeem ntxiv »
