Arcis阿尔西arcn.弧；弧形物vi.形成电弧；按弧形轨迹行进arc preventive coveralls防电弧工作服arcus palmaris profundus[医] 掌深弓arc-suppression method消弧方法arc melting metal powder电弧熔化用的金属Arceuthobium sichuanense云杉矮槲寄生arc elasticity of demand需求的弧弹性arcus tarseus marginalis睑板缘弓arc-extinguishing sand弧灭砂arc extinguishing system灭弧系统arc-excited ultrasonic电弧超声