为矿井的安全生产提供了可靠保障。

This system provides a strong guarantee for safety of mine.

youdao

为降低矿井事故发生率、确保煤矿安全生产提供了保障。

Provided guarantee to reduce mine accident incidence and ensure coal mine safety production.

youdao

为降低矿井事故发生率、确保煤矿安全生产提供了保障。

Provided guarantee to reduce mine accident incidence and ensure coal mine safety production.

youdao