A.2~8m/s B.5~10m/s C.3~10m/s D.4~9m/s
A.0.2MPa/min B.0.15MPa/min C.0.1MPa/min D.0.25MPa/min
A.氮氣 B.低壓氮氣 C.高壓氮氣 D.二氧化碳