首先用电烙铁将保险管两端的焊锡熔化，待焊锡熔化后快速振动并甩出管内的断头及熔化的焊锡，露出保险管两端的小孔，将事先备好的医用注射器针头穿过管两端的小孔，再将做保险丝用的细铜丝穿入注射器针头内，拔出针头，细钢丝便留在了保险管内。焊封时，先用焊锡焊好一端，稍? First use the electric iron to melt the solder on both ends of the fuse. After the solder melts, it quickly vibrates and shakes off the broken ends and melts the solder. The holes on both ends of the fuse are exposed. The prepared medical syringe needle is inserted through the tube. At the end of the hole, the fine copper wire used as a fuse was inserted into the syringe needle. The needle was pulled out and the fine steel wire was left in the fuse. When soldering, use solder to solder one end, slightly?