【电】 fissionable mateial
approve; but; can; may; need; yet
crack; rend; split
【医】 cleavage; cleft; crena; crenae; diastem; diastema; fissura; fissure
gap; rictus; rima; rimae; schistasis; schisto-; schizo-
data; datum; makings; material; stuff
【医】 data; datum; material; stock
【经】 material; materials; spoilage