return core core puller
core barrel with rubber core container
bubble cap absorption column; bubble cap absorption tower
bubble cap bubbling cap
bubbling cap bubble cap
pile cap beam-less raft with post cap
Core-periphery Patterns
(Ag)core·（Au）shell composite nanoparticles
(Au)core(Ag)shell nanoparticle
(Au)core·（Ag）shell（composite） nano-particles
“core shell”emulsion polymerization