Ọnụ ụzọ ọkụ ígwè na-enwe mmetụta na-eguzogide, na ike nhazi nke nwere ike iguzogide ọgụ ogologo oge na-enweghị ibelata nchebe ọkụ, ma nwee ike iguzogide mmetụta nke hydrants ọkụ. The thermal deformation rate nke ígwè ọkụ ọnụ ụzọ dị ala, na-ehulata curvature nke deformation mgbe kpo oku dị ala.

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