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Theory Na-emekarị, urughuru size analysis na-enye oke nke grains nke dị iche iche diameters; Enwere ike ime nyocha a ma site na sieving na site na sedimentation na mmiri na ntinye nke iwu Stokes.

Dabere na nha na ọnụ ọgụgụ nke ọka ndị na-emepụta mkpokọta, a na-akpọ mkpokọta ahụ nchara, ájá, gravel ma ọ bụ okwute. Agbanyeghị, maka mkpokọta enyerela, ọka niile mejupụtara ya enweghị otu akụkụ.

Iji mee nke a, a na-ekewa ọka ndị ahụ n'usoro nke sieves akwụ.

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