- splitting property
- splitting theorem
- spontaneous radiation
- spread
- spread mapping
- spread spectrum multiple access
- s-process
- SP sakian manifold
- SP佐佐木流形
- square
- square
- square
- square-Archimedean ring
- elastic-plastic fracture mechanics
- elastic thin plate
- elastic vibration equation
- electric time division multiplexing
- electrodynamics
- electro-magnetic distance measuring instrument
- electromagnetic energy
- electromagnetic field of moving charged particle
- electromagnetic induction law
- electromagnetic momentum
- electromagnetic potentials
- electromagnetic radiation