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Uhlobo lwephrofayili ye-UZ inqwaba yeshidi eligoqiwe elishisayo
Inqwaba yeshidi lensimbi iwuhlobo lwensimbi olunokhiye, futhi ingxenye yalo ephambanayo iqondile, i-grooved futhi eno-Z, futhi inosayizi abahlukahlukene.
kanye namafomu ahlanganayo.Ezivamile yiLarson, Lackawanna njalonjalo.
Izinzuzo zayo yilezi: amandla aphezulu, kulula ukushayela endaweni eqinile yomhlabathi;ingakhiwa emanzini ajulile, uma kunesidingo, engeza ukusekela okuthambekele ukuze ube yikheji.Ukusebenza okuhle okungangeni manzi;ingakha ama-cofferdams anomumo ohlukahlukene njengoba kudingeka, futhi ingasetshenziswa kabusha izikhathi eziningi, ngakho isetshenziswa kabanzi.