A cikin lokutan Holocene, buƙatar injuna masu nauyi a cikin masana'antu iri-iri sun kasance suna karuwa, sun haɗa da gine-gine, kasuwancin noma, da hakar ma'adinai. Wannan yana da diode mai fitar da haske zuwa ƙara buƙata don dorewa da ingantaccen hanyar roba akan tarakta, excavator, backhoe, da hanyar stevedore. An mayar da hankali ya sw...
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