internal broaching英 [ɪnˈtɜːnl ˈbrəʊtʃɪŋ]美 [ɪnˈtɜːrnl ˈbroʊtʃɪŋ]网络 内拉削机械双语例句Designing and construction features of an upward internal broaching machine上拉式内拉床的设计与结构特点