Tubular rhaub yog covfeem ntau ntau yam ntawm tag nrho cov hluav taws xob cua sov ntsiab.Lawv muaj peev xwm raug tsim los rau hauv txhua qhov kev teeb tsa.Tubular cua sov cov ntsiab lus ua qhov tshwj xeeb ntawm kev hloov hluav taws xob los ntawm kev sib txuas, convection thiab hluav taws xob rau cov kua dej kub, cua, gases, thiab qhov chaw.
