Widely is suitable for professions and so on metallurgy, mine, petroleum, chemical industry, coal, electric power, building materials, municipal administration, environmental protection.

广泛适用于冶金、矿山、石油、化工、煤炭、电力、建材、市政、环保等行业。

youdao

Widely is suitable for professions and so on metallurgy, mine, petroleum, chemical industry, coal, electric power, building materials, municipal administration, environmental protection.

广泛适用于冶金、矿山、石油、化工、煤炭、电力、建材、市政、环保等行业。

youdao