为了有效预防火灾，开发了火灾自动保护型漏电断路器。

In order to prevent fire effectively, fire automatic protection type residual current circuit breaker was developed.

youdao

为了有效预防火灾，开发了火灾自动保护型漏电断路器。

In order to prevent fire effectively, fire automatic protection type residual current circuit breaker was developed.

youdao