SJMU-700N kua nitrogen tank ntse saib xyuas cov ntaub ntawv muaj peev xwm khaws cia; txhawb kev sib txuas nrog ntau yam kev sib txuas lus loj; ntse 10-nti LCD kov npo; graphically tso tawm visually kua nitrogen tank xwm txheej thiab tsis.