黑漆铁丝锁牌
black japanned iron wire hasp and staple
黑漆铁锁牌
black japanned iron hasp & staple
镀黄铜薄铁铰链
brass-plated light iron hinge
镀锌薄铁铰链
zinc-plated light iron hinge
镀锌厚铁铰链
zinc-plated heavy iron hinge
黄铜厚铁铰链
brass-plated heavy iron hinge
10′-去 甲氧基链黑霉素
10’-dernethoxystreptonigrin
钢铁黑化
Blackening of Iron and Steel
钢铁黑化剂
blackening agent for iron and steel