falling type safety fuse filament

例句：

1. 1. The engineer used a falling-type safety fuse to protect the circuit from overheating.
   工程师使用一种下降型安全保险丝来保护电路免受过热。
2. 2.The technician replaced the failing falling-type fuse with a new one.
   技术员用一个新的下降型保险丝替换了损坏的保险丝。
3. 3. The electrical system was designed with multiple falling-type fuses for redundancy and safety.
   电气系统设计有多根下降型保险丝，以实现冗余和安全性。