Ewald chart

3-sphere

5 points on a sphere

a hard sphere unit

absorbing sphere

Absorption sphere shutdown system

action sphere

Activated carbon sphere

Active enhanced sphere

activity sphere

Adhesive hard sphere flu id

adriamycin-magnetic albumin micro- sphere

advanced economic sphere

airsphere

alvelar sphere

alveolar sphere

Amino nano-magnetic sphere

Anisotropic dielectric media sphere model

Anthropo sphere

Anthropo-sphere