Four navy divers were exposed to 1.0MPa (gauge pressure) He-O_2 saturation pressure in the DDC for 72h. During this period, they performed excursion dives to a depth of 112m by the DDC.

• 4名海军潜水员在DDC内1.；0MPa氦氧饱和条件下暴露72h；此间他们分批经SDC到海底巡潜；最大深度到达112m。