[Ubungakanani besicelo]
Isetyenziselwa ukumisela ukufuma kwakhona kokufuma (okanye umxholo wokufuma) weentsinga ezahlukeneyo, iintambo, amalaphu kunye nokomisa kwamaqondo obushushu rhoqo kwamanye amashishini.
[Umgaqo wovavanyo]
Ngokwenkqubo yokusetwa kwangaphambili yokomisa ngokukhawuleza, ukulinganisa okuzenzekelayo ngexesha elithile, uthelekiso lweziphumo ezimbini zokulinganisa, xa umahluko wobunzima phakathi kwamaxesha amabini akufutshane ungaphantsi kwexabiso elichaziweyo, oko kukuthi, uvavanyo lugqityiwe, kwaye ngokuzenzekelayo. bala iziphumo.
[Imigangatho efanelekileyo]
GB/T 9995-1997, GB 6102.1, GB/T 4743, GB/T 6503-2008, ISO 6741.1:1989, ISO 2060:1994, ASTM D2654, njl.