A.1.0~1.5MPa B.0.5~0.8MPa C.0.5~1.0MPa D.0.8~1.2MPa
A.減壓、慢速鉆進 B.加壓、慢速鉆進 C.減壓、快速鉆進 D.加壓、快速鉆進
A.50~100L/min B.50~120L/min C.60~120L/min D.60~100L/min