
Muaj cov lag luam feem ntau cia siab rau ib tug ntau yam ntawm pulley-tsav machinery. Ib tug heev ib feem ntawm kev khiav hauj lwm pulley-tsav machinery yog cov tswj kom pulley thiab ncej kawm tuab si lug. Cov no yog cov ib tug ob peb txoj kev uas laser kawm tuab si lug yuav pab tau cov lag luam yuav tsum tau ntau npaum. Sai Tuab si lug Pulley kawm tuab si lug yuav ua tau ib lub sij hawm-siv thiab tsho project. Kev cia siab rau ib tug ncaj ntug rau… nyeem ntxiv »