Rau ib qho atom ntawm ntug nruab nrab: Ib ntug ntawm lub cubic unit cell ib txwm sib koom ntawm 4 unit cells. Li no ib qho atom ntawm ntug nruab nrab yuav muab sib koom ntawm 4 unit cell thiab nws qhov kev koom tes rau ib chav tsev cell yuav yog $\dfrac{1}{4}$.
Puas muaj pes tsawg atoms nyob hauv ntug Center?
Ob lub atoms muaj nyob hauv qhov kawg nruab nrab cubic unit cell.
Koj txhais li cas los ntawm ntug Center?
Edge cov chaw zov me nyuam yog cov chaw me me nyob ze rau cov pej xeemlawv ua haujlwm uas xa cov khoom siv huab cua thiab cov ntsiab lus cached rau cov neeg siv kawg. Lawv feem ntau txuas mus rau qhov chaw loj dua hauv nruab nrab lossis ntau lub chaw khaws ntaub ntawv.
Puas muaj pes tsawg atoms nyob hauv CCP?
Cubic kaw packing (CCP) yog lwm lub npe muab rau lub ntsej muag kub kub (FCC). Lawv ob leeg muaj qhov ze tshaj plaws tau ntim ntawm atoms. Txawm li cas los xij, cov txheej txheem ntawm daim ntawv dav hlau ntawm atoms tau teem caij sib txawv me ntsis. Yog li ntawd, tag nrho cov atoms nyob rau hauv ib chav tsev cell= 4 atoms
Puas yog ntug nruab nrab thiab xaus qhov nruab nrab?
Nyob rau hauv rooj plaub ntawm qhov kawg nruab nrab ntawm lub cell, cov atoms yog tam sim no nyob rau hauv ob lub ntsej muag opposite thiab nyob rau hauv cov ces kaum tab sis nyob rau hauv cov ntaub ntawv ntawm ntug centered unit cell, lub atoms yog tam sim no nyob rau hauv lub ces kaum thiab cov nruab nrab ntawm tag nrho cov npoo hauvlub cubic unit cell.
