1. 安全熔断器：safety firstengineering 安全技术 | safety fuse 安全熔断器 | safety gap 安全间隙

2. 安全导火线：safety factor 安全系数 | safety fuse 安全导火线 | safety glasses 护目镜

noun

1. an electrical device that can interrupt the flow of electrical current when it is overloaded

Synonym: fuseelectrical fuse

2. a slow-burning fuse consisting of a tube or cord filled or saturated with combustible matter
used to ignite detonators from a distance