1) Examples are given for the hybrid orbitals of tetragonal plane, pentagonal bipyramid and D_4 symmetry using the present method.

2) Nanometer tetragonal polycrystal zirconia powder was prepared by the milling method in the super-alkaline medium containing organic addition.

3) Bridgman method for tetragonal system was investigated by numerical simulation.

4) The output of each four - like many forest has a Tetragonal Haig.

5) The sets of special points for the deformed body centered tetragonal lattice are presented.

6) Titanium nitride was synthesized by ammonia reduction and nitridation under flowing ammonia atmosphere while the content and tetragonal phase structure of zirconia was unchanged.

7) The pattern of XRD illustrated that the pure perovskite tetragonal had been obtained for all samples.

8) With the increasing of doping amounts,(http:///tetragonal.html) phases shift from tetragonal phase to rhombohedral phase.

9) The crystals of YP _ xV _ ( 1 - x ) O _ 4 ( 0 x 1 ) are tetragonal.

10) We comprehensively investigate and discuss the relation in the tetragonal, rhombohedral and coexistence phase region of PZT.

11) In the first place, a formula is proved for indicating a magnetic induction strength inside a long straight helix tube carrying current, with the tubes cross section in tetragonal N regular polygon.