Through analysing the parameter, construction, designing principle of MG150PW extremum thin seam coal winning machine. This paper discusses its developing vista in extremum thin seam mining.

This paper sums up the fundamental structure of wireless energy transmission system for total artificial heart, and compares the key parameters and performance of some representative systems.

The result show that after the adjustment construction parameter deformation of the support in deep foundation pit tends to stably, achieves the deformation control the goal.