环保铜材
[网络] Lead Free Brass;
环保 [huán bǎo]
[词典] (环境保护) environmental protection;
[网络] ROHS; SGS; hse;
[例句]他们积极致力于环保事业。
They were active for the cause of environmental protection.
环保铜材
[网络] Lead Free Brass;
环保 [huán bǎo]
[词典] (环境保护) environmental protection;
[网络] ROHS; SGS; hse;
[例句]他们积极致力于环保事业。
They were active for the cause of environmental protection.