Hom ntsuas kub

Plug hauv hom --- qhov ntsuas kub yog ntsia rau ntawm cov yeeb nkab thiab qhov ntsuas qhov ntsuas tau muab tso rau hauv cov yeeb nkab;

immersion --- lub ntsiab lus rhiab yog immersed nyob rau hauv cov kua ntawm cov yeeb nkab los yog thawv los tswj cov kua;

Hom nto: lub ntsiab lus pom yog ntsia rau saum npoo ntawm cov yeeb nkab lossis zoo ib yam.