Corena科雷纳coren.核心；果心；要点vt.挖去果核core traveling beauty spot核心旅游景区core type magnetic circuit铁芯式磁路core competencies training核心能力培养core binding factor alphal核心结合因子α1Core-dominated parameter核主导系数core--periphery theory核心-边缘core-balance transformer磁势平衡互感器core-periphery structure核心-边缘结构corecladding concentricity纤心包层同心度误差cored dendritic morphology包心树枝晶形态