Ngwaahịa

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Ndị na-asa mmiri Square

Ndị na-asa mmiri Square

Ndị na-emepụta DONGSHAO dị na China na-enye ngwaahịa ndị dị elu, ị na-anabata ịzụrụ ihe dị elu dị elu Square Washers na ọnụ ahịa dị mma.

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Ị chọrọ ịzụta ezigbo mma Square-Beveled-Washers? DONGSHAO bụ ezigbo nhọrọ gị. Anyị bụ ndị ama ama dị ka ndị nrụpụta na ndị na-ebubata Square-Beveled-Washers na China. Anyị ji obi ụtọ na-anabata ndị ahịa ọhụrụ na ndị agadi ka ha gaa na ụlọ ọrụ anyị maka nyocha na mkparịta ụka.
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