tshiab ntxhia
Ib hom pob zeb hauv av tau txiav txim siab los ntawm nws cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv crystallographic, uas yog qhov tseem ceeb rau kev txiav txim siab tsim cov pob zeb tshiab thiab cov npe pob zeb tshiab. Yog tias cov ntxhia tau pom tias nws cov tshuaj muaj pes tsawg leeg thiab / lossis cov khoom siv crystallographic txawv txawv ntawm txhua hom pob zeb uas twb muaj lawm, nws muaj peev xwm hais tias cov ntxhia yog hom tshiab.