martel de perçage.
The low-pressure environment presents a range of challenges for human exploration. Spacecraft designs must take into account the effects of low pressure during landing, ascent, and surface operations. Habitats for astronauts will need to be airtight to maintain a safe atmospheric pressure for human survival.
marte à basse pression

Second, the use and characteristics of the drilling rig:
1). Use:
Engineering anchoring drill can be used in urban construction, railway, highway, river, hydropower and other projects to drill rock anchor hole, anchor hole, blasting hole, grouting hole and other drilling construction.
Second, the use and characteristics of the drilling rig:
1). Use:
Engineering anchoring drill can be used in urban construction, railway, highway, river, hydropower and other projects to drill rock anchor hole, anchor hole, blasting hole, grouting hole and other drilling construction.