Ukujwayelana Inhloso yokulungiswa okuvamile kuma-excavators ukunciphisa ukwehluleka kwemishini, ukwandisa ukuphila komshini, ukunciphisa isikhathi sokuphumula komshini, ukuthuthukisa ukusebenza kahle komsebenzi kanye nokunciphisa izindleko zokusebenza.Ngokuphatha amafutha, izinto zokuthambisa, amanzi nomoya, ukwehluleka kungancishiswa ngo-70%.Eqinisweni, cishe u-70% wokwehluleka ...
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