Lub gantry crane yog ib qho nyiaj siv ua haujlwm crane uas muaj cov kab hluav taws xob overhead txhawb nqa los ntawm cov ceg dawb thiab txav ntawm lub log, txoj kev, lossis kev tsheb ciav hlau nqa tus choj, trolley, thiab hoist.Rhiav, warehouses, freight yards, railroads, thiab shipyards siv gantry cranes raws li lawv lifting tov raws li ib tug variati ...
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