Arcenn.阿尔森(在荷兰；东经 6º11' 北纬 51º28')arcn.弧；弧形物vi.形成电弧；按弧形轨迹行进arc-shaped interface crack弧形界面裂纹arc fusion welding- brazing电弧熔焊-钎焊arc continues casting machine弧形连铸机arc-suppressing transformer灭弧变压器arc-extinguishing equipment灭弧装置arc-shaped cylindrical hill弧形凸起arcus cartilaginis cricoideae环状软骨弓arc-length parameterization弧长参数化arcus lumbocostalis lateralis腰肋外侧弓Arcoscalpellum michelottianumn.小甲小铠茗荷