preferential direction meaning in Hindi

Examples

1. Physically, this characteristic means that the material has no preferential direction.
2. Plasma that escaped the LCFS would do so with no preferential direction, potentially damaging instruments.
3. If he believes there's no preferential direction a shaft wants to bend or twist, then what would be the difference?
4. The result of the interaction between the light-wave and the carrier-deformation wave is that a fraction of the transmitted light-wave changes its momentum ( thus its frequency and energy ) in preferential directions, as if by diffraction caused by an oscillating 3-dimensional diffraction grating.