Lub crawler undercarriage yog ib qho tseem ceeb ntawm cov tshuab hnyav xws li excavators, tsheb laij teb, thiab tsheb bulldozers.Nws ua lub luag haujlwm tseem ceeb hauv kev muab cov tshuab no nrog kev ua haujlwm thiab kev ruaj ntseg, ua rau lawv ua haujlwm tau zoo hauv ntau qhov chaw thiab cov xwm txheej ...
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