Lub hauv paus ntsiab lus ntawm kev sib khi: Cov roj hmab O- nplhaib shrinks radially thiab nruj.
Anti-txoj cai rub tawm: Qhov compression yog deformed, thiab qhov nruab nrab yog me me thiab ob qhov kawg yog loj.
Anti- txoj hauv kev sib hloov: Nws yog nias rau hauv hexagon thiab tig tsis tau.
