Dab tsi koj yuav tsum tau them sai sai rau hauv qhov chaw kub siab ib puag ncig ntawm cov saw hnyav

Kev ua haujlwm siab rau ib puag ncig tsis yog kev sim rau tus neeg teb xov tooj, tab sis kuj tseem ntsuas kev ua haujlwm zoo rau kev nqa saw hlau. Txhawm rau kom muaj kev nyab xeeb kom nyab xeeb thiab muaj txiaj ntsig, qhov teeb meem puas yuav tsum tau them sai sai ib puag ncig?
Lifting saw
Ua ntej tshaj plaws, kev nqa saw hlau yog rau cov khoom hlau muaj lub peev xwm tiv thaiv cov saw hlau, nws yuav ua rau pom kev sib tw ntau dua, nws yuav ua rau lub saw tawm, nws yuav ncav cuag cov qauv ntawm cov qauv ntawm seem. Yog li ntawd, thaum siv cov saw hlau rau kev ua haujlwm nyob rau hauv ib puag ncig kub ib puag ncig, tsis txhob khaws cov saw hlau ua ntej kev ua haujlwm, thiab muab cov khoom siv sab nraum zoov, thiab muab cov khoom siv tawm sab nraum zoov, thiab muab cov khoom siv tawm sab nraum zoov, thiab siv cov khoom siv sab nraum zoov, thiab muab cov khoom siv tawm sab nraum zoov, thiab muab cov khoom siv tawm sab nraum zoov, thiab siv cov khoom siv sab nraum zoov, thiab siv cov khoom siv sab nraum zoov, thiab siv cov khoom siv sab nraum zoov kom tsis txhob ya raws thiab xeb.
Aotai saw tshwj xeeb hauv kev tsim khoom thiab muag khoom ntawm ntau hom kev coj ua kom nruj, cov qauv kev ua tau zoo tshaj plaws nruj heev, los ntawm feem ntau ntawm cov neeg siv kev hlub.