nkowa nkenke:

Ihe nkiri Bopp dị ka ihe ndabere, nke ejiri mmanu mmanu kpuchie ya, ike tensile dị elu, nnukwu viscosity, nnukwu nnyapade!Ngwaahịa dị mma maka nkwakọ ngwaahịa dị ala, mmiri na-adịghị mmiri, mmiri na-eguzogide mmiri, ihu igwe dị mma, nkwụsị okpomọkụ dị ala, nnukwu viscosity;adabara maka nkwakọ ngwaahịa nke katọn dị ka ihe siri ike ịrapara, elu siri ike, kenkowaputa (plastic), akwa akwụkwọ dị elu, wdg, yana na nchekwa oyi ma ọ bụ obere okpomọkụ gburugburu ebe a na-eji ngwugwu.