Lub qhaub cij ntawm lub khob thermos puv nrog cov xuab zeb: qee qhov kev lag luam yuav muab qee qhov xuab zeb tso rau hauv lub qhaub cij ntawm cov thermos thiaj li ci tau. Xws li lub khob thermos yog qhov sov heev thaum nws yuav. Tom qab siv sijhawm ntev, xuab zeb thiab lub tank sab hauv yuav rub tawm tsam, uas yuav yooj yim ua rau kev tiv thaiv thaum tshav kub. Yog tias lub khob xeb, cov nyhuv kev tiv thaiv tshav kub yog qhov tsis zoo.
