Zigawo za Excavator undercarriage-Carrier Roller ndife apadera popanga zida zofukula pansi kuyambira 1990, Chifukwa cha akatswiri athu aluso, timagwira nawo ntchito zoperekera zida zapamtunda-Track roller, zomwe zimagwiritsidwa ntchito ngati zodzigudubuza, bulldozer rollers, crawler c...
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