Kedu nha scraper dị?
| Ogo nke agụba a chọrọ na-adabere n'otú isi nke scraper. Maka scrapers n'ala, ogologo agụba nwere ike ịbụ 200mm (8"), 300mm (12") ma ọ bụ 400mm (16), dabere na nha isi. | |
| A na-ejikarị agụba ogologo ekpuchi ebe elu buru ibu… |
 | … ebe obere scrapers nke chọrọ obere agụba na-ewepụ akara isi ike na ihe ndị ọzọ nke ọma ma nye onye ọrụ njikwa karịa. Mpempe akwụkwọ maka ihe mkpocha mgbidi na-adịkarị 100 mm (inch 4) ogologo. |
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