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§Ú°O±o National Geographic ¦³¤@¶°Á¿ Caterpillar ªº¤j¨®ªº,¤j®a¥i¥Hݯݯ:
http://australia.cat.com/cmms/17741245?x=7
http://australia.cat.com/cda/files/2009304/7/AEXQ0509-01+Mining+Truck+Brochure.pdf


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