骨干: 1.[解剖学] (长骨的中央部分) diaphysis2.(起主要作用的) backbone; mainstay 短语和例子科技队伍的骨干力量 the backbone of the scientific and technological contingents; 起骨干作用 be a mainstay; 领导骨干 mainstay of the leadership;
骨干企业: backbone enterprisekey enterprise / leading producer/ major manufacturerkey enterprise, leading producer, major manufacturerkey enterprise; leading producer, major manufacturer
