In an older blog post, peb tshawb tus tsim thiab daim ntaub ntawv ntawm ib qho ntawm peb cov laser kawm tuab si lug cuab yeej - lub Pulley khub. Cov cuab yeej yog zoo rau kev tswj pulley kawm tuab si lug thiab nrhiav coj thiab tsim kua muag rau siv-tsav yam. Rau lwm qhov chaw ntawm koj lub lag luam, Txawm li cas los, tej zaum koj yuav xav tau ib tug txawv hom ntawm kawm tuab si lug cuab tam. That’s… nyeem ntxiv »
