1) Apple centers 2) Apple centres 3) Apple discards 4) Apple parts 5) Apple throwaways 6) Apple-pie making discards 7) Atomic reactor areas 8) Centers 9) Centers of apples 10) Central parts 11) Central sections 12) CPU features 13) Cruxes 14) Delicious discards 15) Delicious leftovers 16) Delicious waste 1) Essences 2) Hearts 3) Hubs 4) Nuclei 5) Piths 
computer assisted order routing and execution system (Japan, TSE)
These are circular (usually 150mm diameter) samples of compacted coated road materials taken from a finished road by drilling vertically into the road surface.