Cov Txheej Txheem Txhim Kho ntawm Railway Track
Cov txheej txheem kev teeb tsa rau kev tsheb ciav hlau yog nruj, hais txog kev ua tiav, qhov tseeb, thiab ua raws li cov kev cai nruj. Kev nrawm nrawm ntawm cov khoom sib txuas, nrog rau cov pob qij txha, cov ntses, thiab cov bolts, yog qhov tseem ceeb, nrog rau cov lus qhia nruj me ntsis ntawm qhov sib txawv, qhov sib npaug, thiab curvature. Kev ua raws li qhov ntsuas ntsuas qhov ntev, qhov yuav tsum tau nce siab, thiab qhov chaw pw tsaug zog ua kom muaj kev ruaj ntseg thiab kev nyab xeeb ntawm txoj kev. Kev txwv tsis pub txiav cov pa roj thiab cov lus qhia tshwj xeeb rau kev siv cov tshuab txiav qhia txog qhov tseem ceeb ntawm kev ntsuas kev nyab xeeb thaum saib xyuas. Kev saib xyuas tsis tu ncua, suav nrog roj thiab tu, raug yuam kom tswj xyuas kev ncaj ncees thiab tiv thaiv cov khoom khib nyiab. Zuag qhia tag nrho, cov qauv no yog qhov tseem ceeb rau kev ntseeg siab thiab kev ua haujlwm ntawm kev tsheb ciav hlau kev tsheb ciav hlau kom muaj kev nyab xeeb thiab muaj txiaj ntsig kev tsheb ciav hlau.
