Based on the current situation of the supply and demand of China s medical and health resource, this paper, with the data collected, expounds the inharmonious phenomenon of "upside-down triangle" and "regular triangle" in the first part.

With a variational method and a modified arrangmement channel quantum mechanics(MACQM) method,the energies of a equilateral triangle H-3 and a tetrahedron H-4 system are calculated.

Fraunhofer diffraction light intensity distribution of the equilateral triangle and the equilateral hexagon pore;

Symmetry of eigenfunctions on equilateral triangles

Using the variational method and the modified arrangmement channel quantum mechanics(MACQM) method,the energy curve of the equilateral triangle structure of H_3 has been calculated.

An experimental study was conducted to investigate fluctuating lifts on a square-section and a equilateral triangle-section cylinder when it was subjected to air/water two-phase crossflow.

Comparing to the OrthoEngine module of PCI Geomatica, the triangulation rectification method of Cyberland has many advantages and is valuable for generalizing in production.