Cov khoom tseem ceeb hauv huab cua yog nitrogen thiab oxygen, siv qhov kub thiab txias, nitrogen thiab oxygen hauv huab cua hauv zeolite molecular sieve (ZMS) adsorption kev ua tau zoo sib txawv (oxygen tuaj yeem dhau thiab nitrogen adsorption), tsim cov txheej txheem tsim nyog, thiab ua rau nitrogen. thiab sib cais oxygen kom tau oxygen.