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.