矿化围岩的沉积组合反映其形成于较深海盆地的环境，为裂谷盆地构造背景。
Sedimentation combination of the surrounding rocks suggests that they are formed in deep ocean basin environment, which belongs to rift valley basin.
本文针对深海采矿过程中硬管系统和组合缆系统的下放控制问题进行研究。
The objective of this paper is to study the control problem of pipe-dropping and cable-dropping in the process of ocean-mining.
本文针对深海采矿过程中硬管系统和组合缆系统的下放控制问题进行研究。
The objective of this paper is to study the control problem of pipe-dropping and cable-dropping in the process of ocean-mining.
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